ASTROSAT CZTI

Data Quality Report

Orbit 24973

Creation date: 2024-06-27T19:12:10.163691
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_003T17_9000003656_24973cztM0_level2.evt modeM0/AS1A08_003T17_9000003656_24973cztM0_level2_quad_clean.evt
Size (bytes)259,752,96028,537,920
Size247.7 MB 27.2 MB
Events in quadrant A1,677,097163,658
Events in quadrant B2,495,877148,714
Events in quadrant C1,698,745159,136
Events in quadrant D1,767,957156,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070262
B094792
C070792
D073522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33071634.928939%
B330746113.940127%
C33071715.170850%
D33071153.477472%

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 3477 3309 0 0 0.00% 0.00%
B 3477 3309 169 169 4.86% 5.11%
C 3477 3309 0 0 0.00% 0.00%
D 3477 3309 0 0 0.00% 0.00%

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 6 16 9387 99.75 432 421 89.9
A 13 254 5182 52.97 432 421 89.9
A 3 137 4221 42.28 432 421 89.9
B 10 246 449492 5306.01 418 406 84.6
B 3 64 384084 4533.2 418 406 84.6
B 6 36 16230 186.96 418 406 84.6
C 14 238 64146 632.55 413 413 100.8
C 7 247 20854 202.87 413 413 100.8
C 13 61 2864 24.32 413 413 100.8
D 8 195 54844 521.62 418 405 104.4
D 2 244 47456 450.83 418 405 104.4
D 7 238 45737 434.36 418 405 104.4

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