ASTROSAT CZTI

Data Quality Report

Orbit 58483

Creation date: 2026-07-20T05:12:50.604927
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_044T04_9000006592_58483cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58483cztM0_level2_quad_clean.evt
Size (bytes)506,661,12092,033,280
Size483.2 MB 87.8 MB
Events in quadrant A3,263,621665,386
Events in quadrant B8,631,231442,955
Events in quadrant C3,190,818635,299
Events in quadrant D3,165,789591,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141872
B0300592
C0141062
D0141532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467440.680377%
B6467259140.064945%
C6467691.066955%
D6467450.695840%

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 8932 6469 17 17 0.19% 0.26%
B 8932 6468 1667 1667 18.66% 25.77%
C 8932 6469 36 36 0.40% 0.56%
D 8932 6469 40 40 0.45% 0.62%

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 17 129477 713.96 732 716 180.3
A 10 143 86977 478.31 732 716 180.3
A 12 114 66281 363.55 732 716 180.3
B 2 249 5542539 50660.21 511 492 109.4
B 5 172 827037 7555.5 511 492 109.4
B 4 201 113251 1030.74 511 492 109.4
C 12 249 99202 504.02 710 704 195.4
C 9 237 76086 385.73 710 704 195.4
C 14 245 46785 235.8 710 704 195.4
D 8 240 87304 430.88 702 672 201.1
D 3 12 76144 375.37 702 672 201.1
D 0 97 72760 358.54 702 672 201.1

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