ASTROSAT CZTI

Data Quality Report

Orbit 53182

Creation date: 2025-07-29T11:28:37.869247
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_011T06_9000006490_53182cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53182cztM0_level2_quad_clean.evt
Size (bytes)960,505,92070,649,280
Size916.0 MB 67.4 MB
Events in quadrant A4,385,036591,468
Events in quadrant B3,502,678644,016
Events in quadrant C10,802,648378,245
Events in quadrant D16,363,81773,246

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176901
B0151321
C0365811
D0530511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64782804.322322%
B64781512.330966%
C6478257239.703612%
D6478573288.484100%

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 7338 6479 262 262 3.57% 4.04%
B 7338 6479 70 70 0.95% 1.08%
C 7338 6479 2536 2536 34.56% 39.14%
D 7337 6477 5815 5815 79.26% 89.78%

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 3 62 950462 5928.33 645 630 160.2
A 0 8 346404 2158.13 645 630 160.2
A 3 14 143351 890.79 645 630 160.2
B 4 81 381599 2744.8 649 626 138.8
B 2 249 129469 928.28 649 626 138.8
B 10 254 78285 559.51 649 626 138.8
C 0 240 2726064 18678.41 528 523 145.9
C 1 241 2327197 15944.93 528 523 145.9
C 12 250 1014573 6949.39 528 523 145.9
D 15 125 14695929 161260.2 313 298 91.1
D 2 153 112528 1231.54 313 298 91.1
D 12 3 79964 874.2 313 298 91.1

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