ASTROSAT CZTI

Data Quality Report

Orbit 20250910_A14_057T04_9000006508_level2

Creation date: 2025-09-25T04:23:06.292202
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_057T04_9000006508cztM0_level2.fits modeM0/AS1A14_057T04_9000006508cztM0_level2_quad_clean.evt
Size (bytes)8,150,172,4802,197,264,320
Size7.6 GB 2.0 GB
Events in quadrant A65,239,3047,439,666
Events in quadrant B64,912,7577,207,912
Events in quadrant C56,377,7385,857,022
Events in quadrant D16,785,2372,661,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015259380
B015649280
C023730160
D035110310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126470
B0126360
C0127140
D0126220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07690
B07630
C07690
D07620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633991205343.238847%
B634179254614.014797%
C63271511881818.779071%
D63310332077550.667111%

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 763263 635987 0 0 0.00% 0.00%
B 763263 636403 0 0 0.00% 0.00%
C 763263 632592 0 0 0.00% 0.00%
D 763264 553629 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 14 188 47665 7.28 17346 16571 4269.2
A 9 255 41610 5.86 17346 16571 4269.2
A 14 204 41259 5.78 17346 16571 4269.2
B 2 9 45249 7.64 17487 16900 3712.1
B 2 8 38408 5.79 17487 16900 3712.1
B 5 63 38169 5.73 17487 16900 3712.1
C 6 179 42793 6.69 15263 14653 4207.4
C -1 -1 -1 -1.0 15263 14653 4207.4
C -1 -1 -1 -1.0 15263 14653 4207.4
D 6 218 21756 10.85 4809 4257 1612.5
D 15 11 16258 7.44 4809 4257 1612.5
D 3 30 14942 6.63 4809 4257 1612.5

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