ASTROSAT CZTI

Data Quality Report

Orbit 39891

Creation date: 2024-06-27T22:10:00.793863
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/AS1A12_037T07_9000005504_39891cztM0_level2.fits modeM0/AS1A12_037T07_9000005504_39891cztM0_level2_quad_clean.evt
Size (bytes)693,092,160189,587,520
Size661.0 MB 180.8 MB
Events in quadrant A6,233,3011,277,503
Events in quadrant B6,190,4641,285,589
Events in quadrant C5,509,3641,248,803
Events in quadrant D6,820,9851,124,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258723
B0263442
C0237622
D0287012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11626370.318252%
B116263102.666437%
C11626160.137623%
D116263633.122312%

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 16316 11629 13 13 0.08% 0.11%
B 16316 11629 218 218 1.34% 1.87%
C 16316 11629 6 6 0.04% 0.05%
D 16316 11629 306 306 1.88% 2.63%

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 10 83 901805 3423.29 1294 1268 263.1
A 6 10 95213 357.12 1294 1268 263.1
A 15 223 82950 310.5 1294 1268 263.1
B 4 171 592771 2431.83 1263 1228 243.2
B 0 229 210141 858.84 1263 1228 243.2
B 0 183 95963 389.46 1263 1228 243.2
C 15 214 478700 1649.43 1254 1259 289.5
C 14 254 43446 145.74 1254 1259 289.5
C 1 16 33289 110.65 1254 1259 289.5
D 12 227 1010306 3295.23 1244 1207 306.2
D 5 32 177467 575.58 1244 1207 306.2
D 15 1 176377 572.02 1244 1207 306.2

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