ASTROSAT CZTI

Data Quality Report

Orbit 33629

Creation date: 2024-06-27T20:50:51.312140
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/AS1T04_076T01_9000004810_33629cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33629cztM0_level2_quad_clean.evt
Size (bytes)497,453,76079,384,320
Size474.4 MB 75.7 MB
Events in quadrant A2,537,996518,845
Events in quadrant B4,375,671498,786
Events in quadrant C3,342,533513,330
Events in quadrant D4,434,492486,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112353
B0166062
C0133132
D0171332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552860.108538%
B552861611.143271%
C55281392.514472%
D55281382.496382%

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 7322 5529 3 3 0.04% 0.05%
B 7321 5528 512 512 6.99% 9.26%
C 7322 5529 117 117 1.60% 2.12%
D 7322 5529 136 136 1.86% 2.46%

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 15 237 16871 124.28 648 635 130.6
A 13 254 8782 62.36 648 635 130.6
A 10 83 7670 53.85 648 635 130.6
B 5 172 1248576 10382.29 615 598 120.2
B 5 255 463892 3854.28 615 598 120.2
B 4 251 136115 1127.41 615 598 120.2
C 0 10 376888 2617.31 626 633 143.8
C 15 214 254226 1764.05 626 633 143.8
C 3 233 140853 975.4 626 633 143.8
D 8 195 994070 5961.94 617 608 166.6
D 2 250 350743 2101.22 617 608 166.6
D 13 249 245331 1468.63 617 608 166.6

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