ASTROSAT CZTI

Data Quality Report

Orbit 54878

Creation date: 2025-11-19T15:26:11.546414
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/AS1A14_039T06_9000006526_54878cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54878cztM0_level2_quad_clean.evt
Size (bytes)240,981,12056,088,000
Size229.8 MB 53.5 MB
Events in quadrant A2,041,138367,407
Events in quadrant B1,826,853404,913
Events in quadrant C2,392,247332,119
Events in quadrant D2,354,864319,132

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099251385
B094571216
C0118992008
D0116512067

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09116
B09210
C09210
D09110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3903390.999231%
B3944330.836714%
C38662275.871702%
D38401042.708333%

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 6457 4342 0 0 0.00% 0.00%
B 6460 4351 4 4 0.06% 0.09%
C 6459 4252 183 183 2.83% 4.30%
D 6456 4244 90 90 1.39% 2.12%

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 14 358568 3377.64 425 415 106.0
A 13 248 10083 91.18 425 415 106.0
A 13 254 8540 76.62 425 415 106.0
B 5 185 70721 766.43 423 408 91.7
B 10 247 39753 428.87 423 408 91.7
B 10 245 20946 223.87 423 408 91.7
C 4 5 661638 5961.84 396 392 110.9
C 14 254 74580 668.88 396 392 110.9
C 15 178 38215 341.01 396 392 110.9
D 10 181 179258 1549.19 403 385 115.5
D 11 176 171595 1482.82 403 385 115.5
D 6 239 171186 1479.28 403 385 115.5

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