ASTROSAT CZTI

Data Quality Report

Orbit 20190115_T03_061T01_9000002654_level2

Creation date: 2025-11-26T20:16:14.385902
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/AS1T03_061T01_9000002654cztM0_level2.fits modeM0/AS1T03_061T01_9000002654cztM0_level2_quad_clean.evt
Size (bytes)258,926,400261,204,480
Size246.9 MB 249.1 MB
Events in quadrant A1,564,4741,567,086
Events in quadrant B1,491,2441,550,004
Events in quadrant C1,535,0281,502,663
Events in quadrant D1,316,7101,357,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05720
B05720
C05720
D05720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580650
B0617770
C0582950
D0704350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A281155481.949137%
B2811510303.663525%
C281156942.468433%
D2811515555.530855%

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 30000 28113 0 0 0.00% 0.00%
B 30000 28112 0 0 0.00% 0.00%
C 30000 28114 0 0 0.00% 0.00%
D 30000 28102 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 0 29 1499 10.69 406 378 104.9
A 7 110 1326 9.04 406 378 104.9
A 9 19 1179 7.64 406 378 104.9
B 2 9 1153 9.5 393 373 82.1
B 3 17 1045 8.19 393 373 82.1
B 5 232 1023 7.92 393 373 82.1
C 1 81 1180 7.68 405 376 104.7
C 1 80 1161 7.49 405 376 104.7
C 3 126 1073 6.65 405 376 104.7
D 6 231 977 6.3 374 340 101.1
D 3 14 954 6.07 374 340 101.1
D 3 31 937 5.9 374 340 101.1

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