ASTROSAT CZTI

Data Quality Report

Orbit 49631

Creation date: 2024-12-03T19:28:37.171007
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/AS1T05_233T01_9000006438_49631cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49631cztM0_level2_quad_clean.evt
Size (bytes)3,023,521,920109,131,840
Size2.8 GB 104.1 MB
Events in quadrant A32,902,038145,394
Events in quadrant B17,605,0971,507,574
Events in quadrant C15,693,78336,949
Events in quadrant D44,321,077344,513

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01102760
B0646530
C0582460
D01439280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1801918019100.000000%
B18020323517.952275%
C1802018020100.000000%
D180201773098.390677%

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 19578 18018 7123 7123 36.38% 39.53%
B 19580 18022 2250 2250 11.49% 12.48%
C 19579 18019 1361 1361 6.95% 7.55%
D 19579 18019 16620 16620 84.89% 92.24%

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 99 21874620 175431.4 218 199 124.7
A 10 83 3346669 26838.47 218 199 124.7
A 4 60 1962179 15734.95 218 199 124.7
B 3 232 2093844 5729.94 1714 1664 365.1
B 4 170 1954645 5348.71 1714 1664 365.1
B 1 207 1118102 3057.63 1714 1664 365.1
C 15 180 3838545 43164.05 77 65 88.9
C 15 181 3278763 36869.26 77 65 88.9
C 15 163 1160826 13052.86 77 65 88.9
D 15 40 11682802 27289.87 570 499 428.1
D 7 45 5474733 12787.81 570 499 428.1
D 15 184 2446963 5714.94 570 499 428.1

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