ASTROSAT CZTI

Data Quality Report

Orbit 32155

Creation date: 2024-06-27T20:37:06.105803
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/AS1A09_131T01_9000004690_32155cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32155cztM0_level2_quad_clean.evt
Size (bytes)603,613,440119,770,560
Size575.7 MB 114.2 MB
Events in quadrant A3,528,807790,948
Events in quadrant B6,054,243784,958
Events in quadrant C3,791,193776,209
Events in quadrant D4,407,403762,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151682
B0236001
C0157611
D0176231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7363791.072932%
B73633174.305310%
C73631682.281679%
D73631882.553307%

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 7598 7364 0 0 0.00% 0.00%
B 7598 7364 109 109 1.43% 1.48%
C 7598 7364 4 4 0.05% 0.05%
D 7598 7364 111 111 1.46% 1.51%

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 12 189 83177 467.39 886 866 176.1
A 13 6 19286 104.6 886 866 176.1
A 13 254 12558 66.39 886 866 176.1
B 6 159 1981653 11954.1 863 840 165.7
B 5 172 346795 2087.82 863 840 165.7
B 0 190 257870 1551.16 863 840 165.7
C 0 10 215381 1087.4 845 850 197.3
C 14 238 146562 738.58 845 850 197.3
C 3 233 74669 374.17 845 850 197.3
D 8 195 600566 2978.79 853 829 201.3
D 12 233 512712 2542.43 853 829 201.3
D 2 234 38629 187.74 853 829 201.3

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