ASTROSAT CZTI

Data Quality Report

Orbit 29146

Creation date: 2024-06-27T20:00:47.877386
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_099T01_9000004184_29146cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29146cztM0_level2_quad_clean.evt
Size (bytes)932,091,840157,901,760
Size888.9 MB 150.6 MB
Events in quadrant A5,868,612993,807
Events in quadrant B6,061,1071,017,515
Events in quadrant C6,151,108972,633
Events in quadrant D9,293,696925,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255392
B0259272
C0258183
D0360052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12623950.752594%
B126231010.800127%
C126231981.568565%
D126237115.632575%

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 13843 12625 0 0 0.00% 0.00%
B 13843 12625 5 5 0.04% 0.04%
C 13843 12625 0 0 0.00% 0.00%
D 13843 12625 552 552 3.99% 4.37%

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 13 254 22484 68.41 1520 1483 307.0
A 3 137 15285 44.96 1520 1483 307.0
A 0 226 12799 36.86 1520 1483 307.0
B 0 183 40986 135.32 1510 1468 292.0
B 12 111 36909 121.36 1510 1468 292.0
B 11 111 33764 110.59 1510 1468 292.0
C 14 238 260588 751.63 1468 1477 344.7
C 3 233 103873 297.03 1468 1477 344.7
C 14 254 37882 105.6 1468 1477 344.7
D 1 52 2764225 8043.41 1451 1415 343.5
D 8 195 783952 2278.21 1451 1415 343.5
D 12 233 127590 367.34 1451 1415 343.5

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