ASTROSAT CZTI

Data Quality Report

Orbit 57050

Creation date: 2026-04-14T19:53:10.991247
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_083T10_9000006566_57050cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57050cztM0_level2_quad_clean.evt
Size (bytes)425,779,200107,121,600
Size406.1 MB 102.2 MB
Events in quadrant A4,004,673692,521
Events in quadrant B3,342,225750,212
Events in quadrant C3,842,697665,843
Events in quadrant D3,998,817622,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172370
B0152210
C0164160
D0170943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73601081.467391%
B7361380.516234%
C7361720.978128%
D73601191.616848%

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 7360 7360 128 128 1.74% 1.74%
B 7361 7361 24 24 0.33% 0.33%
C 7361 7361 64 64 0.87% 0.87%
D 7360 7360 97 97 1.32% 1.32%

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 3 14 729558 3742.13 791 770 194.8
A 10 251 115105 587.08 791 770 194.8
A 4 249 19688 97.14 791 770 194.8
B 0 63 68655 400.37 784 756 169.6
B 0 213 44032 255.18 784 756 169.6
B 4 201 37707 217.88 784 756 169.6
C 9 38 233536 1124.35 763 757 207.0
C 1 16 195225 939.3 763 757 207.0
C 14 67 142877 686.46 763 757 207.0
D 12 33 172215 790.42 766 730 217.0
D 3 12 138884 636.78 766 730 217.0
D 7 96 131891 604.55 766 730 217.0

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