ASTROSAT CZTI

Data Quality Report

Orbit 45749

Creation date: 2024-06-27T23:15:43.867247
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_183T01_9000006124_45749cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45749cztM0_level2_quad_clean.evt
Size (bytes)576,385,920105,598,080
Size549.7 MB 100.7 MB
Events in quadrant A5,824,792735,777
Events in quadrant B7,163,294635,729
Events in quadrant C3,634,411735,223
Events in quadrant D4,241,545665,063

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211521
B0255731
C0146872
D0164811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60952323.806399%
B6095128121.017227%
C60942153.528060%
D60953024.954881%

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 7275 6096 8 8 0.11% 0.13%
B 7275 6095 807 807 11.09% 13.24%
C 7274 6094 138 138 1.90% 2.26%
D 7275 6095 201 201 2.76% 3.30%

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 10 83 2793966 17896.73 758 744 156.1
A 13 248 37991 238.65 758 744 156.1
A 14 235 30960 193.6 758 744 156.1
B 3 112 3886435 28483.58 695 675 136.4
B 5 172 241451 1764.95 695 675 136.4
B 5 32 72153 523.95 695 675 136.4
C 14 254 651226 3775.61 737 745 172.3
C 12 2 70296 403.7 737 745 172.3
C 3 233 21221 118.85 737 745 172.3
D 13 249 402230 2167.94 738 715 185.2
D 1 52 350405 1888.12 738 715 185.2
D 1 47 329612 1775.85 738 715 185.2

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