ASTROSAT CZTI

Data Quality Report

Orbit 51765

Creation date: 2025-04-24T04:30:41.217938
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/AS1A13_090T01_9000006464_51765cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51765cztM0_level2_quad_clean.evt
Size (bytes)2,152,661,760244,788,480
Size2.0 GB 233.4 MB
Events in quadrant A13,236,2491,765,874
Events in quadrant B16,393,1331,834,021
Events in quadrant C16,732,8731,512,574
Events in quadrant D31,792,742931,756

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0531584
B0623744
C0635494
D01081894

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A198327543.801936%
B19832206410.407422%
C19832252512.731948%
D19833861843.452831%

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 20958 19842 298 298 1.42% 1.50%
B 20958 19842 1200 1200 5.73% 6.05%
C 20957 19841 1807 1807 8.62% 9.11%
D 20959 19839 7001 7001 33.40% 35.29%

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 12 3 1780700 3352.21 2146 2093 530.6
A 8 249 659849 1239.7 2146 2093 530.6
A 11 3 398015 746.21 2146 2093 530.6
B 4 206 5867426 13174.95 2077 2005 445.2
B 8 128 550921 1232.98 2077 2005 445.2
B 7 252 338151 755.05 2077 2005 445.2
C 15 218 5270160 9728.36 1991 1974 541.5
C 15 230 581953 1071.0 1991 1974 541.5
C 0 209 430498 791.32 1991 1974 541.5
D 11 129 21253938 47327.83 1589 1529 449.0
D 8 176 1140708 2536.88 1589 1529 449.0
D 7 60 710762 1579.42 1589 1529 449.0

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