ASTROSAT CZTI

Data Quality Report

Orbit 34974

Creation date: 2022-03-18T05:59:30.001502
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/AS1A10_123T09_9000005012_34974cztM0_level2.evt modeM0/AS1A10_123T09_9000005012_34974cztM0_level2_quad_clean.evt
Size (bytes)225,322,56034,277,760
Size214.9 MB 32.7 MB
Events in quadrant A1,313,691211,697
Events in quadrant B1,938,294203,814
Events in quadrant C1,431,596216,622
Events in quadrant D1,949,357206,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057092
B076031
C058601
D077051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279050.179211%
B27902398.566308%
C2790210.752688%
D2790220.788530%

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 4913 2791 0 0 0.00% 0.00%
B 4913 2791 195 195 3.97% 6.99%
C 4913 2791 16 16 0.33% 0.57%
D 4913 2791 12 12 0.24% 0.43%

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 35150 523.55 327 321 66.5
A 13 6 10758 156.89 327 321 66.5
A 13 254 4137 57.36 327 321 66.5
B 3 112 554055 8959.62 314 305 61.8
B 5 172 61629 992.22 314 305 61.8
B 0 190 40373 648.3 314 305 61.8
C 15 214 114718 1538.73 316 318 74.3
C 0 10 68324 914.71 316 318 74.3
C 14 67 12300 161.16 316 318 74.3
D 8 195 557561 7205.69 315 306 77.3
D 13 249 82884 1067.79 315 306 77.3
D 7 223 40405 518.51 315 306 77.3

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