ASTROSAT CZTI

Data Quality Report

Orbit 20230718_A12_089T01_9000005776_level2

Creation date: 2023-07-19T19:29:15.221942
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/AS1A12_089T01_9000005776cztM0_level2.fits modeM0/AS1A12_089T01_9000005776cztM0_level2_quad_clean.evt
Size (bytes)302,814,720297,296,640
Size288.8 MB 283.5 MB
Events in quadrant A1,797,1541,721,960
Events in quadrant B1,720,7461,720,993
Events in quadrant C1,769,6161,691,518
Events in quadrant D1,506,4981,492,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07060
B07060
C07060
D07060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0767480
B0760020
C0696080
D0890840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A345913110.899078%
B345917382.133503%
C34591140.040473%
D3459110733.101963%

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 46153 34589 0 0 0.00% 0.00%
B 46153 34584 0 0 0.00% 0.00%
C 46153 34591 0 0 0.00% 0.00%
D 46153 34574 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 7 110 1481 8.66 468 438 120.4
A 9 19 1464 8.52 468 438 120.4
A 0 29 1436 8.29 468 438 120.4
B 2 9 1463 11.43 454 432 90.2
B 3 80 1249 9.06 454 432 90.2
B 2 8 1180 8.29 454 432 90.2
C 1 81 1446 8.35 467 436 121.0
C 1 80 1396 7.93 467 436 121.0
C 1 65 1232 6.58 467 436 121.0
D 3 14 1204 6.94 430 390 117.3
D 7 3 1104 6.09 430 390 117.3
D 6 62 1091 5.98 430 390 117.3

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