ASTROSAT CZTI

Data Quality Report

Orbit 38761

Creation date: 2024-06-27T21:56:06.186199
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_051T01_9000005394_38761cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38761cztM0_level2_quad_clean.evt
Size (bytes)477,976,320130,489,920
Size455.8 MB 124.4 MB
Events in quadrant A4,091,856879,387
Events in quadrant B3,695,543909,525
Events in quadrant C3,913,872845,927
Events in quadrant D5,383,798772,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171923
B0162412
C0166022
D0212692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7827660.843235%
B7827160.204421%
C7827420.536604%
D78272843.628466%

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 10993 7829 39 39 0.35% 0.50%
B 10993 7829 3 3 0.03% 0.04%
C 10993 7829 36 36 0.33% 0.46%
D 10993 7829 289 289 2.63% 3.69%

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 10 83 494300 2814.92 868 853 175.3
A 9 143 95607 540.53 868 853 175.3
A 13 248 74679 421.15 868 853 175.3
B 5 200 160558 934.25 871 845 171.0
B 4 171 57056 328.81 871 845 171.0
B 0 190 38785 221.93 871 845 171.0
C 15 214 342980 1703.15 852 858 200.9
C 0 10 83289 410.36 852 858 200.9
C 14 254 68052 334.51 852 858 200.9
D 2 250 940209 4629.21 836 814 202.9
D 2 16 817258 4023.32 836 814 202.9
D 13 249 174427 855.54 836 814 202.9

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