ASTROSAT CZTI

Data Quality Report

Orbit 20170911_G07_046T01_9000001534_level2

Creation date: 2017-10-22T00:10:59.239085
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/AS1G07_046T01_9000001534cztM0_level2.evt modeM0/AS1G07_046T01_9000001534cztM0_level2_quad_clean.evt
Size (bytes)3,312,414,720506,448,000
Size3.1 GB 483.0 MB
Events in quadrant A20,533,8803,195,156
Events in quadrant B30,572,7923,101,561
Events in quadrant C19,526,8693,168,212
Events in quadrant D26,832,3672,969,074

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08580
B08580
C08580
D08580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0887360
B01181410
C0868820
D01080860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A423263460.817464%
B4232631737.496574%
C423261850.437084%
D423264110.971034%

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 56313 42334 3 3 0.01% 0.01%
B 56313 42335 2095 2095 3.72% 4.95%
C 56313 42334 12 12 0.02% 0.03%
D 56313 42334 136 136 0.24% 0.32%

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 13 251 637299 615.69 5102 4992 1027.0
A 1 162 143150 134.53 5102 4992 1027.0
A 0 226 46306 40.23 5102 4992 1027.0
B 4 239 9457217 9964.26 5021 4905 948.6
B 0 219 766936 803.3 5021 4905 948.6
B 11 51 245020 253.12 5021 4905 948.6
C 4 254 75856 61.85 4953 4983 1146.0
C 4 175 70319 57.01 4953 4983 1146.0
C 14 234 43919 33.98 4953 4983 1146.0
D 2 16 5123862 4358.04 4886 4755 1174.6
D 8 195 1980757 1682.23 4886 4755 1174.6
D 1 52 608553 514.03 4886 4755 1174.6

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