ASTROSAT CZTI

Data Quality Report

Orbit 04372

Creation date: 2024-06-27T14:41:03.665007
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/AS1G05_252T01_9000000544_04372cztM0_level2.evt modeM0/AS1G05_252T01_9000000544_04372cztM0_level2_quad_clean.evt
Size (bytes)594,627,84080,444,160
Size567.1 MB 76.7 MB
Events in quadrant A6,444,055483,601
Events in quadrant B3,241,292521,873
Events in quadrant C2,989,858506,847
Events in quadrant D4,908,642485,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233992
B0133701
C0129581
D0188591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A626595615.259377%
B62651272.027135%
C62651101.755786%
D62655669.034318%

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 7464 6264 726 726 9.73% 11.59%
B 7464 6264 4 4 0.05% 0.06%
C 7464 6264 0 0 0.00% 0.00%
D 7464 6264 350 350 4.69% 5.59%

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 3486048 22361.51 761 746 155.9
A 15 234 13778 83.61 761 746 155.9
A 13 248 9692 57.4 761 746 155.9
B 4 48 71643 464.35 793 775 152.6
B 15 54 67345 436.18 793 775 152.6
B 15 204 19860 125.05 793 775 152.6
C 9 16 6692 33.44 760 764 177.3
C 13 61 6400 31.79 760 764 177.3
C 9 247 4482 20.97 760 764 177.3
D 12 233 727965 4068.24 742 721 178.8
D 2 63 422211 2357.83 742 721 178.8
D 13 53 227452 1268.34 742 721 178.8

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