ASTROSAT CZTI

Data Quality Report

Orbit 20221102_A12_006T07_9000005376_level2

Creation date: 2022-11-05T13:00:35.907943
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A12_006T07_9000005376cztM0_level2.fits modeM0/AS1A12_006T07_9000005376cztM0_level2_quad_clean.evt
Size (bytes)199,877,760186,226,560
Size190.6 MB 177.6 MB
Events in quadrant A1,217,4561,099,859
Events in quadrant B1,160,2061,101,990
Events in quadrant C1,201,8041,055,305
Events in quadrant D906,874817,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0519060
B0536000
C0504710
D01220500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227261430.629235%
B227268913.920620%
C227262411.060459%
D22726540523.783332%

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 28607 22726 0 0 0.00% 0.00%
B 28607 22718 0 0 0.00% 0.00%
C 28607 22726 0 0 0.00% 0.00%
D 28607 22684 0 0 0.00% 0.00%

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 9 19 1048 9.33 317 298 80.4
A 7 110 1013 8.9 317 298 80.4
A 0 29 990 8.61 317 298 80.4
B 2 9 1091 12.91 306 292 61.9
B 3 80 874 9.4 306 292 61.9
B 2 8 863 9.22 306 292 61.9
C 1 80 986 8.29 317 296 83.2
C 1 81 983 8.26 317 296 83.2
C 3 203 912 7.4 317 296 83.2
D 7 3 686 6.34 259 236 71.0
D 4 160 669 6.1 259 236 71.0
D 10 113 649 5.82 259 236 71.0

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