ASTROSAT CZTI

Data Quality Report

Orbit 20160307_T01_041T01_9000000362_level2

Creation date: 2017-10-27T01:29:20.495689
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_041T01_9000000362cztM0_level2.evt modeM0/AS1T01_041T01_9000000362cztM0_level2_quad_clean.evt
Size (bytes)9,794,718,7201,498,910,400
Size9.1 GB 1.4 GB
Events in quadrant A69,577,9229,150,016
Events in quadrant B63,055,3019,389,849
Events in quadrant C66,123,0759,212,773
Events in quadrant D89,188,5678,814,967

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01770
B01770
C01770
D01770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026260
B026260
C026260
D026260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02944670
B02760260
C02850820
D03573420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12888838893.017348%
B12888822581.751909%
C12888824981.938117%
D128887116049.003235%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 146810 128910 1957 1957 1.33% 1.52%
B 146810 128910 433 433 0.29% 0.34%
C 146810 128910 1415 1415 0.96% 1.10%
D 146810 128909 7820 7820 5.33% 6.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 143 5397824 1777.55 14964 14653 3028.4
A 8 14 3184962 1046.85 14964 14653 3028.4
A 15 236 1283364 418.93 14964 14653 3028.4
B 6 36 1657509 567.21 15238 14852 2896.0
B 14 167 576620 193.98 15238 14852 2896.0
B 4 48 481726 161.21 15238 14852 2896.0
C 5 234 7503857 2204.48 14640 14710 3397.2
C 14 223 633281 182.08 14640 14710 3397.2
C 1 192 208009 56.9 14640 14710 3397.2
D 9 66 28955241 8600.01 14126 13792 3365.3
D 13 53 1908288 562.95 14126 13792 3365.3
D 13 169 996564 292.03 14126 13792 3365.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter