ASTROSAT CZTI

Data Quality Report

Orbit 20210613_A10_071T49_9000004462_level2

Creation date: 2025-12-26T22:30:02.058115
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_071T49_9000004462cztM0_level2.fits modeM0/AS1A10_071T49_9000004462cztM0_level2_quad_clean.evt
Size (bytes)692,046,720494,323,200
Size660.0 MB 471.4 MB
Events in quadrant A4,493,8422,971,368
Events in quadrant B3,524,3581,772,397
Events in quadrant C4,282,6282,777,374
Events in quadrant D3,758,3542,559,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014480
B014480
C014480
D014480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01547440
B03780890
C01568110
D01764810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7125516102.259491%
B712552668537.450004%
C7125519382.719809%
D7125517322.430707%

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 82450 71242 0 0 0.00% 0.00%
B 82450 71227 0 0 0.00% 0.00%
C 82450 71246 0 0 0.00% 0.00%
D 82450 71245 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 0 29 3633 8.97 1170 1102 282.2
A 7 110 3533 8.61 1170 1102 282.2
A 9 19 3384 8.09 1170 1102 282.2
B 2 9 2728 9.81 932 891 187.2
B 5 128 2421 8.17 932 891 187.2
B 5 232 2355 7.82 932 891 187.2
C 12 241 2991 6.69 1133 1059 288.9
C 3 126 2881 6.31 1133 1059 288.9
C 9 233 2833 6.14 1133 1059 288.9
D 10 189 2722 6.18 1072 977 282.4
D 7 3 2716 6.16 1072 977 282.4
D 15 47 2628 5.84 1072 977 282.4

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