ASTROSAT CZTI

Data Quality Report

Orbit 23751

Creation date: 2024-06-27T18:58:17.696946
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/AS1A08_009T01_9000003516_23751cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23751cztM0_level2_quad_clean.evt
Size (bytes)495,792,000115,329,600
Size472.8 MB 110.0 MB
Events in quadrant A3,180,733768,507
Events in quadrant B3,980,044784,573
Events in quadrant C3,381,476766,690
Events in quadrant D4,046,383734,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137312
B0160632
C0143422
D0163342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6285410.652347%
B62851672.657120%
C62851131.797932%
D62851262.004773%

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 7555 6285 0 0 0.00% 0.00%
B 7555 6285 62 62 0.82% 0.99%
C 7555 6285 1 1 0.01% 0.02%
D 7555 6285 60 60 0.79% 0.95%

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 13 254 11686 65.47 825 807 166.2
A 0 226 7014 37.35 825 807 166.2
A 3 137 6863 36.44 825 807 166.2
B 3 64 609382 3970.69 826 808 153.3
B 0 229 106595 690.22 826 808 153.3
B 0 189 24689 155.81 826 808 153.3
C 14 238 130009 691.63 814 821 186.8
C 7 247 51776 272.79 814 821 186.8
C 5 4 17995 91.94 814 821 186.8
D 8 195 597247 3063.29 812 790 194.7
D 1 52 235084 1203.29 812 790 194.7
D 12 233 79661 405.07 812 790 194.7

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