ASTROSAT CZTI

Data Quality Report

Orbit 46439

Creation date: 2024-06-27T23:23:13.629269
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/AS1A13_062T01_9000006208_46439cztM0_level2.fits modeM0/AS1A13_062T01_9000006208_46439cztM0_level2_quad_clean.evt
Size (bytes)864,552,960212,022,720
Size824.5 MB 202.2 MB
Events in quadrant A11,119,2341,395,350
Events in quadrant B6,548,7941,409,252
Events in quadrant C7,082,0791,398,856
Events in quadrant D6,224,9521,299,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413672
B0288512
C0300572
D0284122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132752862.154426%
B132763782.847243%
C132753032.282486%
D132751341.009416%

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 14140 13277 11 11 0.08% 0.08%
B 14141 13278 103 103 0.73% 0.78%
C 14140 13277 145 145 1.03% 1.09%
D 14140 13277 38 38 0.27% 0.29%

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 5199089 16879.42 1487 1456 307.9
A 3 7 105896 339.17 1487 1456 307.9
A 7 3 63931 202.89 1487 1456 307.9
B 0 189 666882 2256.1 1473 1421 295.0
B 12 111 39559 129.3 1473 1421 295.0
B 14 111 36413 118.63 1473 1421 295.0
C 14 254 859451 2487.95 1472 1477 344.9
C 9 54 373852 1079.81 1472 1477 344.9
C 3 233 80891 230.28 1472 1477 344.9
D 1 52 239774 646.66 1473 1430 368.6
D 13 249 163098 438.63 1473 1430 368.6
D 2 249 111380 298.31 1473 1430 368.6

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