ASTROSAT CZTI

Data Quality Report

Orbit 20220611_A10_071T37_9000005180_level2

Creation date: 2026-01-03T06:45:41.811817
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_071T37_9000005180cztM0_level2.fits modeM0/AS1A10_071T37_9000005180cztM0_level2_quad_clean.evt
Size (bytes)517,783,680487,995,840
Size493.8 MB 465.4 MB
Events in quadrant A3,220,2782,981,653
Events in quadrant B2,936,4322,730,406
Events in quadrant C3,098,7422,803,480
Events in quadrant D2,607,1682,447,111

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011380
B011380
C011380
D011380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01146590
B01629060
C01267290
D01612610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55607990.178035%
B5560746768.409013%
C556079581.722805%
D5560735566.394878%

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 75980 55606 0 0 0.00% 0.00%
B 75980 55542 0 0 0.00% 0.00%
C 75980 55596 0 0 0.00% 0.00%
D 75980 55567 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 7 110 2589 8.55 838 785 210.9
A 9 19 2534 8.29 838 785 210.9
A 0 29 2518 8.22 838 785 210.9
B 2 9 2511 11.62 776 740 152.4
B 3 80 2269 10.04 776 740 152.4
B 2 8 2067 8.71 776 740 152.4
C 1 81 2523 8.34 818 766 210.7
C 1 80 2487 8.17 818 766 210.7
C 3 203 2422 7.86 818 766 210.7
D 6 38 1891 6.11 747 682 197.8
D 10 189 1865 5.98 747 682 197.8
D 10 113 1860 5.96 747 682 197.8

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