ASTROSAT CZTI

Data Quality Report

Orbit 21845

Creation date: 2024-06-27T18:32:57.173014
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/AS1A07_004T01_9000003230_21845cztM0_level2.evt modeM0/AS1A07_004T01_9000003230_21845cztM0_level2_quad_clean.evt
Size (bytes)527,987,52087,431,040
Size503.5 MB 83.4 MB
Events in quadrant A3,611,744539,287
Events in quadrant B3,904,832550,547
Events in quadrant C3,628,352532,311
Events in quadrant D4,334,415501,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156332
B0163222
C0155252
D0179322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7518630.837989%
B75191041.383163%
C75191041.383163%
D75192032.699827%

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 9358 7520 3 3 0.03% 0.04%
B 9359 7520 24 24 0.26% 0.32%
C 9359 7521 4 4 0.04% 0.05%
D 9359 7521 113 113 1.21% 1.50%

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 4 2 45405 237.89 923 902 187.1
A 13 254 14320 71.72 923 902 187.1
A 0 226 8003 37.96 923 902 187.1
B 3 64 105713 592.78 928 905 176.8
B 0 230 73872 412.69 928 905 176.8
B 0 190 29849 163.7 928 905 176.8
C 14 238 139156 663.99 889 894 208.2
C 10 23 17142 78.03 889 894 208.2
C 13 61 6181 25.39 889 894 208.2
D 7 238 427774 1926.13 879 854 221.6
D 13 174 177969 799.09 879 854 221.6
D 1 52 175079 786.05 879 854 221.6

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