ASTROSAT CZTI

Data Quality Report

Orbit 45990

Creation date: 2024-06-27T23:18:29.682116
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_017T01_9000006148_45990cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45990cztM0_level2_quad_clean.evt
Size (bytes)1,773,216,000270,780,480
Size1.7 GB 258.2 MB
Events in quadrant A19,463,5321,758,202
Events in quadrant B24,368,8871,485,300
Events in quadrant C8,339,8721,932,563
Events in quadrant D12,000,7561,713,334

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0702923
B0854853
C0391193
D0491463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18987205210.807395%
B18987543828.640649%
C189873661.927635%
D1898710775.672302%

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 20307 18987 1176 1176 5.79% 6.19%
B 20307 18987 4312 4312 21.23% 22.71%
C 20307 18987 30 30 0.15% 0.16%
D 20307 18988 762 762 3.75% 4.01%

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 7349219 17357.4 2048 2001 423.3
A 15 223 3968573 9370.81 2048 2001 423.3
A 2 79 197967 462.96 2048 2001 423.3
B 3 112 16787786 44885.93 1894 1826 374.0
B 12 111 48900 125.88 1894 1826 374.0
B 11 111 44663 114.55 1894 1826 374.0
C 14 254 188939 383.4 2083 2088 487.4
C 3 233 23587 44.11 2083 2088 487.4
C 13 61 13978 24.4 2083 2088 487.4
D 12 2 2161970 4213.27 2050 1988 512.7
D 1 52 1223450 2382.59 2050 1988 512.7
D 2 249 273320 529.26 2050 1988 512.7

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