ASTROSAT CZTI

Data Quality Report

Orbit 34522

Creation date: 2022-02-15T16:58:27.738254
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/AS1A05_103T05_9000004930_34522cztM0_level2.evt modeM0/AS1A05_103T05_9000004930_34522cztM0_level2_quad_clean.evt
Size (bytes)2,977,712,640350,778,240
Size2.8 GB 334.5 MB
Events in quadrant A13,679,4852,284,524
Events in quadrant B20,560,9402,251,756
Events in quadrant C15,697,1852,273,241
Events in quadrant D38,328,0631,853,811

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587768
B0796517
C0631937
D01337677

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28507720.252570%
B2850717746.223033%
C285071350.473568%
D28507756826.547865%

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 38454 28513 28 28 0.07% 0.10%
B 38454 28513 1192 1192 3.10% 4.18%
C 38454 28513 100 100 0.26% 0.35%
D 38454 28513 6814 6814 17.72% 23.90%

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 9 143 193324 282.58 3405 3334 672.3
A 10 83 157907 229.9 3405 3334 672.3
A 13 6 95363 136.88 3405 3334 672.3
B 5 172 4271951 6935.04 3293 3207 615.5
B 0 229 1331537 2158.02 3293 3207 615.5
B 0 189 499868 806.88 3293 3207 615.5
C 15 214 1233114 1619.91 3323 3354 759.2
C 15 159 618187 809.89 3323 3354 759.2
C 14 67 492104 643.81 3323 3354 759.2
D 7 38 5625489 7532.9 2873 2820 746.4
D 13 174 4795573 6421.03 2873 2820 746.4
D 7 80 4177268 5592.66 2873 2820 746.4

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