ASTROSAT CZTI

Data Quality Report

Orbit 53020

Creation date: 2025-07-17T14:49:46.900222
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/AS1C09_011T07_9000006488_53020cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53020cztM0_level2_quad_clean.evt
Size (bytes)865,342,08059,495,040
Size825.3 MB 56.7 MB
Events in quadrant A13,959,4375,765
Events in quadrant B4,068,654556,469
Events in quadrant C8,366,716362,832
Events in quadrant D5,193,436475,361

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452241
B0160391
C0288401
D0194821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733569299.284842%
B57334598.006279%
C5733201435.129949%
D57333886.767835%

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 6902 5732 5435 5435 78.75% 94.82%
B 6903 5734 368 368 5.33% 6.42%
C 6903 5734 1857 1857 26.90% 32.39%
D 6903 5734 385 385 5.58% 6.71%

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 9 191 11960022 278396.04 163 158 43.0
A 7 206 796333 18532.98 163 158 43.0
A 12 115 209382 4870.22 163 158 43.0
B 10 44 1144547 9514.52 567 548 120.2
B 10 128 188297 1561.49 567 548 120.2
B 8 128 157115 1302.15 567 548 120.2
C 1 241 2973287 22609.09 476 472 131.5
C 15 224 2784493 21173.26 476 472 131.5
C 1 16 401798 3052.2 476 472 131.5
D 2 62 1055153 6648.29 558 534 158.6
D 15 78 643469 4053.04 558 534 158.6
D 12 17 531680 3348.33 558 534 158.6

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