ASTROSAT CZTI

Data Quality Report

Orbit 19684

Creation date: 2024-06-27T18:05:32.834417
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/AS1A05_221T01_9000002936_19684cztM0_level2.evt modeM0/AS1A05_221T01_9000002936_19684cztM0_level2_quad_clean.evt
Size (bytes)484,701,120107,861,760
Size462.2 MB 102.9 MB
Events in quadrant A3,365,010706,370
Events in quadrant B3,518,404729,409
Events in quadrant C3,656,415696,826
Events in quadrant D3,692,978675,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139491
B0144501
C0148131
D0152071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581300.455858%
B6581510.774958%
C6581871.321988%
D6581861.306792%

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 7891 6582 0 0 0.00% 0.00%
B 7891 6582 8 8 0.10% 0.12%
C 7891 6582 6 6 0.08% 0.09%
D 7891 6582 54 54 0.68% 0.82%

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 0 226 7705 39.29 874 860 174.2
A 3 137 6261 31.0 874 860 174.2
A 12 194 6205 30.68 874 860 174.2
B 12 111 18639 109.01 875 856 163.1
B 4 216 17800 103.87 875 856 163.1
B 7 220 16993 98.92 875 856 163.1
C 14 238 133331 663.46 855 863 199.7
C 3 233 108259 537.89 855 863 199.7
C 9 221 43895 215.52 855 863 199.7
D 1 52 381156 1832.5 856 833 207.5
D 7 38 54482 258.5 856 833 207.5
D 2 234 23652 109.95 856 833 207.5

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