ASTROSAT CZTI

Data Quality Report

Orbit 28649

Creation date: 2024-06-27T19:54:27.886634
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/AS1A10_073T08_9000004112_28649cztM0_level2.evt modeM0/AS1A10_073T08_9000004112_28649cztM0_level2_quad_clean.evt
Size (bytes)560,528,640102,101,760
Size534.6 MB 97.4 MB
Events in quadrant A3,492,514676,897
Events in quadrant B3,471,310681,144
Events in quadrant C3,469,941652,398
Events in quadrant D6,082,371609,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145401
B0144641
C0144691
D0227521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67741512.229111%
B67751592.346863%
C67753054.501845%
D67755227.704797%

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 7284 6775 21 21 0.29% 0.31%
B 7285 6776 3 3 0.04% 0.04%
C 7285 6776 0 0 0.00% 0.00%
D 7285 6776 434 434 5.96% 6.40%

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 15 174 109418 625.76 861 843 173.5
A 12 16 44669 252.59 861 843 173.5
A 13 254 14306 77.59 861 843 173.5
B 10 245 37720 225.25 848 828 163.8
B 0 156 28275 167.58 848 828 163.8
B 4 80 27093 160.36 848 828 163.8
C 14 238 187224 977.66 813 821 190.7
C 14 254 85212 442.62 813 821 190.7
C 7 247 15352 76.21 813 821 190.7
D 1 52 1425460 7235.34 817 797 196.9
D 8 195 1131108 5740.43 817 797 196.9
D 12 233 268933 1361.76 817 797 196.9

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