ASTROSAT CZTI

Data Quality Report

Orbit 54138

Creation date: 2025-09-30T20:47:13.287323
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_012T01_9000006512_54138cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54138cztM0_level2_quad_clean.evt
Size (bytes)490,838,40091,022,400
Size468.1 MB 86.8 MB
Events in quadrant A3,454,120614,658
Events in quadrant B4,411,923648,590
Events in quadrant C3,197,649585,231
Events in quadrant D6,616,326468,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142781
B0173511
C0142351
D0239401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62941542.446775%
B62943014.782332%
C62951241.969817%
D6295107817.124702%

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 7384 6294 73 73 0.99% 1.16%
B 7384 6294 159 159 2.15% 2.53%
C 7385 6295 69 69 0.93% 1.10%
D 7384 6294 1013 1013 13.72% 16.09%

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 15 174 267101 1596.67 673 655 166.9
A 3 14 235950 1410.0 673 655 166.9
A 4 3 136760 815.61 673 655 166.9
B 5 236 600360 4302.8 653 630 139.4
B 15 20 553168 3964.22 653 630 139.4
B 14 167 139281 994.76 653 630 139.4
C 13 3 413333 2295.76 653 646 179.8
C 9 237 69123 380.94 653 646 179.8
C 1 16 55822 306.94 653 646 179.8
D 8 176 2406596 13668.38 607 579 176.0
D 2 172 741455 4208.85 607 579 176.0
D 7 70 476169 2701.79 607 579 176.0

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