ASTROSAT CZTI

Data Quality Report

Orbit 53504

Creation date: 2025-08-19T04:38:19.987314
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_53504cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53504cztM0_level2_quad_clean.evt
Size (bytes)1,046,070,720101,782,080
Size997.6 MB 97.1 MB
Events in quadrant A9,687,901709,128
Events in quadrant B6,098,615832,992
Events in quadrant C18,091,031226,249
Events in quadrant D4,194,024729,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347003
B0241181
C0594951
D0187061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8405160419.083879%
B84057558.982748%
C8405623574.182035%
D8405971.154075%

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 8445 8406 1081 1081 12.80% 12.86%
B 8445 8404 262 262 3.10% 3.12%
C 8445 8406 5328 5328 63.09% 63.38%
D 8445 8406 49 49 0.58% 0.58%

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 62 3314054 15016.3 895 873 220.6
A 3 63 1748359 7920.11 895 873 220.6
A 15 174 620718 2809.32 895 873 220.6
B 4 206 1203329 6109.27 917 883 196.8
B 10 28 339945 1722.67 917 883 196.8
B 4 171 291063 1474.32 917 883 196.8
C 7 64 12811766 91405.68 512 507 140.2
C 12 254 783497 5586.47 512 507 140.2
C 9 38 762172 5434.32 512 507 140.2
D 3 12 141746 546.68 926 888 257.7
D 2 120 94498 363.31 926 888 257.7
D 1 0 82494 316.72 926 888 257.7

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