ASTROSAT CZTI

Data Quality Report

Orbit 53497

Creation date: 2025-08-18T16:49:21.317539
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_002T07_9000006498_53497cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53497cztM0_level2_quad_clean.evt
Size (bytes)813,320,64079,266,240
Size775.6 MB 75.6 MB
Events in quadrant A11,848,879333,227
Events in quadrant B3,767,442687,996
Events in quadrant C10,651,898354,531
Events in quadrant D3,333,960570,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397341
B0155531
C0360541
D0145051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506353554.334460%
B65062203.381494%
C6506283943.636643%
D65061362.090378%

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 7541 6507 3256 3256 43.18% 50.04%
B 7541 6507 80 80 1.06% 1.23%
C 7541 6507 2750 2750 36.47% 42.26%
D 7541 6507 61 61 0.81% 0.94%

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 3345378 25354.33 538 527 131.9
A 3 62 3143587 23824.73 538 527 131.9
A 15 174 3118347 23633.41 538 527 131.9
B 0 171 453498 2971.01 712 687 152.4
B 10 28 145134 947.75 712 687 152.4
B 7 252 74041 481.29 712 687 152.4
C 7 64 3890711 27868.08 510 506 139.6
C 1 241 3333152 23873.92 510 506 139.6
C 15 224 666317 4769.64 510 506 139.6
D 1 0 206522 1028.92 701 669 200.1
D 3 12 198865 990.65 701 669 200.1
D 5 173 44491 219.04 701 669 200.1

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