ASTROSAT CZTI

Data Quality Report

Orbit 35568

Creation date: 2022-04-27T08:51:06.509040
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_026T01_9000005092_35568cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35568cztM0_level2_quad_clean.evt
Size (bytes)549,558,72065,543,040
Size524.1 MB 62.5 MB
Events in quadrant A6,959,590338,810
Events in quadrant B2,716,426439,985
Events in quadrant C3,398,262436,239
Events in quadrant D3,227,983416,398

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238823
B0114662
C0133412
D0129512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5024213442.476115%
B5024871.731688%
C50241452.886146%
D50242274.518312%

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 7086 5025 2056 2056 29.01% 40.92%
B 7086 5025 44 44 0.62% 0.88%
C 7086 5025 104 104 1.47% 2.07%
D 7086 5025 182 182 2.57% 3.62%

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 15 169 5371784 70623.53 378 372 76.1
A 10 83 109543 1435.38 378 372 76.1
A 13 6 7508 93.82 378 372 76.1
B 5 172 350762 3233.63 573 558 108.3
B 5 200 41830 381.08 573 558 108.3
B 4 81 26150 236.3 573 558 108.3
C 9 187 571935 4405.45 560 563 129.7
C 0 10 396348 3051.62 560 563 129.7
C 15 214 224546 1726.98 560 563 129.7
D 1 52 257001 1931.96 549 534 132.7
D 12 233 251053 1887.16 549 534 132.7
D 8 195 184905 1388.87 549 534 132.7

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