ASTROSAT CZTI

Data Quality Report

Orbit 19273

Creation date: 2024-06-27T18:00:55.551601
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/AS1A05_107T01_9000002852_19273cztM0_level2.evt modeM0/AS1A05_107T01_9000002852_19273cztM0_level2_quad_clean.evt
Size (bytes)804,916,800145,226,880
Size767.6 MB 138.5 MB
Events in quadrant A5,450,699900,699
Events in quadrant B5,430,465923,011
Events in quadrant C5,427,909902,825
Events in quadrant D7,289,413876,211

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237912
B0235582
C0235652
D0295442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114961261.096033%
B114961211.052540%
C114961401.217815%
D114962692.339944%

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 11995 11495 9 9 0.08% 0.08%
B 11995 11496 0 0 0.00% 0.00%
C 11995 11496 0 0 0.00% 0.00%
D 11995 11496 168 168 1.40% 1.46%

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 127655 464.47 1350 1317 272.0
A 9 143 61553 221.45 1350 1317 272.0
A 12 96 37792 134.1 1350 1317 272.0
B 0 229 40643 151.85 1353 1318 259.0
B 0 230 35710 132.8 1353 1318 259.0
B 12 111 32667 121.05 1353 1318 259.0
C 14 238 204505 664.35 1308 1314 305.9
C 3 233 99051 319.56 1308 1314 305.9
C 8 128 13207 38.88 1308 1314 305.9
D 1 52 1181499 3696.0 1315 1276 319.3
D 7 238 470243 1468.62 1315 1276 319.3
D 12 218 464578 1450.88 1315 1276 319.3

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