ASTROSAT CZTI

Data Quality Report

Orbit 20220903_C07_001T11_9000005326_level2

Creation date: 2026-01-05T04:46:36.345309
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/AS1C07_001T11_9000005326cztM0_level2.fits modeM0/AS1C07_001T11_9000005326cztM0_level2_quad_clean.evt
Size (bytes)608,423,040943,044,480
Size580.2 MB 899.4 MB
Events in quadrant A3,593,3806,149,300
Events in quadrant B3,524,3726,322,553
Events in quadrant C3,625,4546,135,419
Events in quadrant D3,032,3725,312,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01807520
B01676970
C01544310
D02085380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02630
B02630
C02630
D02630

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013880
B013880
C013880
D013880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6771934675.119686%
B6771826833.962019%
C6771915402.274103%
D6771764909.584004%

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 94157 67524 0 0 0.00% 0.00%
B 94157 67675 0 0 0.00% 0.00%
C 94157 67570 0 0 0.00% 0.00%
D 94157 67503 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 7 110 2976 8.95 939 883 234.0
A 9 19 2951 8.84 939 883 234.0
A 0 29 2886 8.56 939 883 234.0
B 2 9 2951 11.47 935 896 179.1
B 3 80 2747 10.33 935 896 179.1
B 5 128 2534 9.14 935 896 179.1
C 1 81 3136 9.1 959 903 245.5
C 1 80 3023 8.64 959 903 245.5
C 3 203 2810 7.77 959 903 245.5
D 10 113 2302 6.5 866 791 232.4
D 7 3 2279 6.4 866 791 232.4
D 6 62 2194 6.04 866 791 232.4

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