ASTROSAT CZTI

Data Quality Report

Orbit 39568

Creation date: 2024-06-27T22:06:16.062686
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/AS1A12_018T01_9000005488_39568cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39568cztM0_level2_quad_clean.evt
Size (bytes)700,269,12079,931,520
Size667.8 MB 76.2 MB
Events in quadrant A5,580,833605,157
Events in quadrant B2,590,892658,846
Events in quadrant C11,066,252265,961
Events in quadrant D6,222,337474,158

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205943
B0122122
C0369212
D0228672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59493415.732056%
B594970.117667%
C5949349258.698941%
D5949121120.356362%

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 7232 5950 323 323 4.47% 5.43%
B 7232 5950 2 2 0.03% 0.03%
C 7232 5950 3334 3334 46.10% 56.03%
D 7232 5950 1051 1051 14.53% 17.66%

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 15 222 2616786 21087.72 609 597 124.1
A 10 83 462816 3725.7 609 597 124.1
A 9 143 53370 425.38 609 597 124.1
B 5 255 106934 874.35 624 607 121.6
B 15 35 16996 134.77 624 607 121.6
B 12 111 15385 121.52 624 607 121.6
C 9 187 7668870 85924.61 377 378 89.2
C 15 208 1673483 18746.95 377 378 89.2
C 15 214 165893 1854.57 377 378 89.2
D 12 227 3824599 28865.29 543 526 132.5
D 12 233 143082 1076.06 543 526 132.5
D 1 52 49406 368.96 543 526 132.5

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