ASTROSAT CZTI

Data Quality Report

Orbit 20201102_A09_038T30_9000003958_level2

Creation date: 2021-01-07T15:48:32.847370
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/AS1A09_038T30_9000003958cztM0_level2_bc.evt modeM0/AS1A09_038T30_9000003958cztM0_level2_quad_clean.evt
Size (bytes)174,522,24079,338,240
Size166.4 MB 75.7 MB
Events in quadrant A916,185530,819
Events in quadrant B968,902535,832
Events in quadrant C975,900509,816
Events in quadrant D2,091,143490,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095870
B097400
C098430
D0130420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A477250.104778%
B477250.104778%
C4772310.649623%
D47722334.882649%

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 4772 4772 0 0 0.00% 0.00%
B 4772 4772 0 0 0.00% 0.00%
C 4772 4772 0 0 0.00% 0.00%
D 4772 4772 162 162 3.39% 3.39%

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 13 254 7985 142.07 236 231 54.6
A 6 16 1641 25.83 236 231 54.6
A 0 226 1486 22.99 236 231 54.6
B 15 32 23628 475.49 238 231 49.2
B 10 245 21481 431.86 238 231 49.2
B 4 200 5627 109.66 238 231 49.2
C 15 208 87066 1534.85 226 224 56.6
C 10 22 8751 150.71 226 224 56.6
C 2 16 3731 61.98 226 224 56.6
D 1 52 1056998 19080.98 227 218 55.4
D 7 80 99593 1794.29 227 218 55.4
D 2 250 33266 596.71 227 218 55.4

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