ASTROSAT CZTI

Data Quality Report

Orbit 14327

Creation date: 2024-06-27T16:53:33.363621
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_14327cztM0_level2.evt modeM0/AS1G08_078T01_9000002110_14327cztM0_level2_quad_clean.evt
Size (bytes)75,211,20023,754,240
Size71.7 MB 22.7 MB
Events in quadrant A575,097165,341
Events in quadrant B516,256164,682
Events in quadrant C560,008157,212
Events in quadrant D550,884150,458

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03111
B0308
C0328
D03111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036181291
B034491315
C035651348
D038591571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076
B088
C066
D088

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107710.092851%
B104600.000000%
C106300.000000%
D104000.000000%

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 1460 1270 3 3 0.21% 0.24%
B 1459 1236 0 0 0.00% 0.00%
C 1459 1245 0 0 0.00% 0.00%
D 1443 1229 1 1 0.07% 0.08%

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 44137 1522.52 134 131 28.9
A 8 15 11408 390.16 134 131 28.9
A 4 2 4181 140.12 134 131 28.9
B 12 111 2723 98.23 130 128 26.4
B 0 219 2632 94.79 130 128 26.4
B 4 173 2482 89.11 130 128 26.4
C 3 233 60994 1958.98 127 128 31.1
C 13 61 933 25.91 127 128 31.1
C 14 234 921 25.52 127 128 31.1
D 5 222 45932 1486.77 123 120 30.8
D 2 120 22077 712.59 123 120 30.8
D 1 52 7921 253.17 123 120 30.8

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