ASTROSAT CZTI

Data Quality Report

Orbit 53729

Creation date: 2025-09-03T07:29:56.456951
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/AS1A14_022T04_9000006506_53729cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53729cztM0_level2_quad_clean.evt
Size (bytes)1,037,946,24062,953,920
Size989.9 MB 60.0 MB
Events in quadrant A16,204,74859,102
Events in quadrant B2,909,000644,171
Events in quadrant C12,110,000270,654
Events in quadrant D6,698,015480,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0525931
B0135681
C0404181
D0244431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470591091.344668%
B6470801.236476%
C6469372957.644149%
D646999015.303756%

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 7449 6469 5836 5836 78.35% 90.21%
B 7450 6471 21 21 0.28% 0.32%
C 7449 6469 3162 3162 42.45% 48.88%
D 7449 6470 851 851 11.42% 13.15%

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 3 63 11560081 149166.14 306 298 77.5
A 3 78 3162527 40805.05 306 298 77.5
A 15 174 88181 1134.03 306 298 77.5
B 4 216 82175 562.96 667 643 144.8
B 0 213 38223 259.48 667 643 144.8
B 5 185 30027 202.89 667 643 144.8
C 15 224 5175117 44274.26 419 415 116.9
C 1 241 4789093 40971.48 419 415 116.9
C 15 158 96160 819.19 419 415 116.9
D 1 241 2877776 16472.84 611 584 174.7
D 7 30 244212 1394.85 611 584 174.7
D 7 110 212885 1215.49 611 584 174.7

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