ASTROSAT CZTI

Data Quality Report

Orbit 23520

Creation date: 2024-06-27T18:55:36.413750
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_112T02_9000003480_23520cztM0_level2.evt modeM0/AS1A07_112T02_9000003480_23520cztM0_level2_quad_clean.evt
Size (bytes)804,052,800169,032,960
Size766.8 MB 161.2 MB
Events in quadrant A5,590,3711,101,212
Events in quadrant B5,924,4401,128,404
Events in quadrant C6,268,3251,058,344
Events in quadrant D5,793,5671,040,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236892
B0245532
C0256182
D0249472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11438480.419654%
B114381110.970449%
C114382061.801014%
D11439650.568231%

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 13953 11440 0 0 0.00% 0.00%
B 13953 11439 16 16 0.11% 0.14%
C 13953 11439 80 80 0.57% 0.70%
D 13954 11441 31 31 0.22% 0.27%

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 26875 88.68 1444 1417 287.1
A 13 254 18016 57.82 1444 1417 287.1
A 0 226 12619 39.02 1444 1417 287.1
B 0 189 141732 525.9 1434 1400 266.8
B 12 17 60834 222.73 1434 1400 266.8
B 12 111 31423 112.51 1434 1400 266.8
C 2 16 464327 1474.6 1364 1370 314.0
C 14 238 221159 700.07 1364 1370 314.0
C 10 91 172522 545.15 1364 1370 314.0
D 1 52 474087 1411.72 1386 1345 334.9
D 2 234 46079 133.59 1386 1345 334.9
D 8 195 19063 52.91 1386 1345 334.9

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