ASTROSAT CZTI

Data Quality Report

Orbit 53862

Creation date: 2025-09-12T11:30:28.758165
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_057T04_9000006508_53862cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53862cztM0_level2_quad_clean.evt
Size (bytes)610,234,56095,728,320
Size582.0 MB 91.3 MB
Events in quadrant A3,805,464669,375
Events in quadrant B3,814,071725,769
Events in quadrant C7,924,733513,410
Events in quadrant D6,525,742523,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158292
B0158552
C0281372
D0242233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66902143.198804%
B66901121.674141%
C6690154323.064275%
D6689104215.577814%

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 7880 6691 159 159 2.02% 2.38%
B 7880 6691 28 28 0.36% 0.42%
C 7880 6691 1471 1471 18.67% 21.98%
D 7879 6690 1013 1013 12.86% 15.14%

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 0 8 332353 1807.36 742 724 183.5
A 4 249 198217 1076.33 742 724 183.5
A 3 62 84802 458.22 742 724 183.5
B 4 170 263492 1653.17 742 715 159.0
B 5 185 130828 818.56 742 715 159.0
B 0 171 123269 771.01 742 715 159.0
C 1 241 3176337 17773.14 639 634 178.7
C 15 224 1693356 9473.49 639 634 178.7
C 13 3 295655 1651.11 639 634 178.7
D 8 176 2992841 15787.32 656 625 189.5
D 2 249 373345 1966.52 656 625 189.5
D 15 203 134473 706.2 656 625 189.5

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