ASTROSAT CZTI

Data Quality Report

Orbit 20231223_A13_003T01_9000006002_level2

Creation date: 2024-01-01T14:49:43.231260
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/AS1A13_003T01_9000006002cztM0_level2.fits modeM0/AS1A13_003T01_9000006002cztM0_level2_quad_clean.evt
Size (bytes)1,181,514,2401,261,840,320
Size1.1 GB 1.2 GB
Events in quadrant A7,042,6927,680,897
Events in quadrant B6,812,8247,772,617
Events in quadrant C6,929,8227,283,624
Events in quadrant D5,881,3546,372,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01630
B01650
C01650
D01650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026880
B026880
C026880
D026880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04249500
B03085940
C03291360
D03970830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13290749863.751495%
B13290746473.496430%
C13290850013.762753%
D13290796287.244163%

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 254141 132895 0 0 0.00% 0.00%
B 254141 132809 0 0 0.00% 0.00%
C 254141 132809 0 0 0.00% 0.00%
D 254142 132646 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 5752 8.71 1834 1713 463.8
A 0 29 5550 8.27 1834 1713 463.8
A 15 236 5444 8.04 1834 1713 463.8
B 2 9 6560 13.68 1802 1714 354.2
B 2 8 5160 9.73 1802 1714 354.2
B 3 17 4882 8.94 1802 1714 354.2
C 3 202 5460 7.96 1834 1707 471.3
C 3 203 5271 7.56 1834 1707 471.3
C 1 81 5243 7.5 1834 1707 471.3
D 8 176 5612 8.68 1688 1533 469.9
D 10 189 4433 6.17 1688 1533 469.9
D 8 192 4357 6.01 1688 1533 469.9

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