ASTROSAT CZTI

Data Quality Report

Orbit 53500

Creation date: 2025-08-18T22:12:22.967181
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_53500cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53500cztM0_level2_quad_clean.evt
Size (bytes)888,073,92087,045,120
Size846.9 MB 83.0 MB
Events in quadrant A8,411,007598,344
Events in quadrant B5,417,651718,634
Events in quadrant C13,719,308260,758
Events in quadrant D4,807,675590,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297512
B0205582
C0453885
D0187552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6701137220.474556%
B67016659.923892%
C6700439265.552239%
D67004666.955224%

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 7831 6702 1059 1059 13.52% 15.80%
B 7831 6702 246 246 3.14% 3.67%
C 7830 6701 4006 4006 51.16% 59.78%
D 7830 6701 315 315 4.02% 4.70%

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 3022348 16771.68 741 725 180.2
A 15 174 1636212 9077.86 741 725 180.2
A 3 62 703733 3902.08 741 725 180.2
B 4 206 1359867 8323.02 760 733 163.3
B 4 171 492076 3008.87 760 733 163.3
B 0 171 207987 1269.18 760 733 163.3
C 7 64 10218174 74330.4 502 500 137.5
C 1 241 930041 6762.12 502 500 137.5
C 15 224 160288 1162.41 502 500 137.5
D 7 110 832118 3910.95 750 718 212.6
D 9 49 328357 1541.23 750 718 212.6
D 3 12 178674 837.12 750 718 212.6

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