ASTROSAT CZTI

Data Quality Report

Orbit 45745

Creation date: 2024-06-27T23:15:41.359017
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/AS1T05_183T01_9000006124_45745cztM0_level2.fits modeM0/AS1T05_183T01_9000006124_45745cztM0_level2_quad_clean.evt
Size (bytes)576,155,520105,220,800
Size549.5 MB 100.3 MB
Events in quadrant A6,056,160709,876
Events in quadrant B4,502,192738,630
Events in quadrant C3,767,505705,129
Events in quadrant D6,480,508563,114

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222162
B0178472
C0158532
D0239152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67232203.272349%
B67232153.197977%
C67232423.599584%
D6723109916.346869%

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 7638 6724 3 3 0.04% 0.04%
B 7638 6724 57 57 0.75% 0.85%
C 7638 6724 131 131 1.72% 1.95%
D 7638 6724 1099 1099 14.39% 16.34%

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 2991644 18697.28 768 752 160.0
A 14 235 44333 272.44 768 752 160.0
A 10 255 20591 124.02 768 752 160.0
B 3 112 1044010 6861.09 770 748 152.1
B 15 201 85054 554.44 770 748 152.1
B 5 255 84742 552.39 770 748 152.1
C 14 254 785412 4406.1 757 762 178.1
C 12 249 10345 53.81 757 762 178.1
C 3 233 8016 40.73 757 762 178.1
D 7 38 2221179 12190.81 720 697 182.1
D 1 52 582325 3193.23 720 697 182.1
D 1 47 263034 1440.27 720 697 182.1

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