ASTROSAT CZTI

Data Quality Report

Orbit 58624

Creation date: 2026-07-29T19:04:54.331277
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/AS1A14_004T06_9000006594_58624cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58624cztM0_level2_quad_clean.evt
Size (bytes)522,115,20099,910,080
Size497.9 MB 95.3 MB
Events in quadrant A3,375,353665,793
Events in quadrant B3,695,968712,618
Events in quadrant C7,722,228563,553
Events in quadrant D3,991,580596,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149282
B0156072
C0277042
D0166562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781171.676698%
B69781682.407567%
C6978111615.993121%
D69781892.708512%

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 7833 6979 11 11 0.14% 0.16%
B 7833 6979 27 27 0.34% 0.39%
C 7833 6979 911 911 11.63% 13.05%
D 7833 6979 106 106 1.35% 1.52%

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 12 114 117086 605.92 779 757 192.0
A 10 251 113423 586.84 779 757 192.0
A 3 14 52476 269.39 779 757 192.0
B 8 128 195544 1187.34 765 737 164.1
B 4 171 127659 773.58 765 737 164.1
B 8 234 94868 573.72 765 737 164.1
C 15 217 2646063 13680.27 711 703 193.4
C 13 3 1326962 6858.64 711 703 193.4
C 12 252 368983 1904.53 711 703 193.4
D 8 240 287523 1348.43 751 716 212.7
D 12 128 178094 833.95 751 716 212.7
D 3 12 104868 489.67 751 716 212.7

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