ASTROSAT CZTI

Data Quality Report

Orbit 14331

Creation date: 2024-06-27T16:53:37.381436
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/AS1G08_078T01_9000002110_14331cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14331cztM0_level2_quad_clean.evt
Size (bytes)590,918,40081,313,920
Size563.5 MB 77.5 MB
Events in quadrant A3,377,840519,836
Events in quadrant B5,820,312484,774
Events in quadrant C3,418,539508,951
Events in quadrant D4,830,086486,152

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139319
B0212314
C0138548
D01870311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6631881.327100%
B6633114817.307402%
C6631410.618308%
D66322714.086248%

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 7740 6635 0 0 0.00% 0.00%
B 7739 6634 891 891 11.51% 13.43%
C 7740 6636 0 0 0.00% 0.00%
D 7740 6635 180 180 2.33% 2.71%

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 8 15 60511 348.04 850 835 171.5
A 12 189 45717 261.76 850 835 171.5
A 0 226 7554 39.19 850 835 171.5
B 10 245 2629088 17415.43 785 769 150.9
B 0 219 34413 222.93 785 769 150.9
B 0 214 30429 196.53 785 769 150.9
C 3 233 255644 1354.1 811 815 188.2
C 13 61 5860 26.81 811 815 188.2
C 2 191 2662 9.81 811 815 188.2
D 1 52 621272 3217.04 812 793 192.9
D 5 222 368761 1907.83 812 793 192.9
D 12 110 206728 1067.73 812 793 192.9

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