ASTROSAT CZTI

Data Quality Report

Orbit 37813

Creation date: 2024-06-27T21:44:48.534572
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_054T01_9000005350_37813cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37813cztM0_level2_quad_clean.evt
Size (bytes)206,256,96026,858,880
Size196.7 MB 25.6 MB
Events in quadrant A1,386,078159,970
Events in quadrant B1,410,061162,210
Events in quadrant C1,347,459160,606
Events in quadrant D1,929,929149,187

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055862
B057051
C054531
D073481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2512110.437898%
B2512180.716561%
C2512130.517516%
D25121827.245223%

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 4425 2513 7 7 0.16% 0.28%
B 4425 2513 12 12 0.27% 0.48%
C 4425 2513 14 14 0.32% 0.56%
D 4425 2513 184 184 4.16% 7.32%

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 10 83 169444 2718.02 298 293 62.2
A 15 222 28128 447.27 298 293 62.2
A 9 143 18654 295.04 298 293 62.2
B 0 189 68269 1170.92 296 288 58.1
B 0 229 43723 748.13 296 288 58.1
B 5 172 38413 656.67 296 288 58.1
C 15 214 114007 1649.94 288 290 68.9
C 0 10 90666 1311.28 288 290 68.9
C 0 207 13395 190.14 288 290 68.9
D 13 249 284921 4033.04 280 272 70.6
D 12 233 239090 3383.69 280 272 70.6
D 2 249 152732 2160.13 280 272 70.6

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