ASTROSAT CZTI

Data Quality Report

Orbit 08692

Creation date: 2024-06-27T15:35:58.862279
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/AS1G07_024T01_9000001206_08692cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08692cztM0_level2_quad_clean.evt
Size (bytes)802,212,480215,447,040
Size765.0 MB 205.5 MB
Events in quadrant A5,510,4231,423,002
Events in quadrant B6,292,5621,453,667
Events in quadrant C5,336,9871,433,386
Events in quadrant D6,319,1191,363,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02519711
B02696616
C02493610
D02791920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0131
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12338910.737559%
B123351781.443048%
C12338270.218836%
D123332492.018973%

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 13592 12342 5 5 0.04% 0.04%
B 13592 12343 92 92 0.68% 0.75%
C 13592 12344 2 2 0.01% 0.02%
D 13592 12340 168 168 1.24% 1.36%

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 13 251 117027 405.78 1390 1358 285.1
A 15 174 19634 64.11 1390 1358 285.1
A 5 16 15994 51.34 1390 1358 285.1
B 10 16 305390 1151.51 1399 1366 264.0
B 4 48 295586 1114.38 1399 1366 264.0
B 0 219 65672 243.56 1399 1366 264.0
C 1 16 32675 100.62 1352 1357 311.2
C 13 61 10670 29.92 1352 1357 311.2
C 8 128 8798 23.91 1352 1357 311.2
D 12 233 741486 2255.54 1345 1301 328.2
D 7 71 206984 626.77 1345 1301 328.2
D 2 152 79977 239.75 1345 1301 328.2

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