ASTROSAT CZTI

Data Quality Report

Orbit 58537

Creation date: 2026-07-24T12:11:06.721109
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_58537cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58537cztM0_level2_quad_clean.evt
Size (bytes)484,202,88099,720,000
Size461.8 MB 95.1 MB
Events in quadrant A3,556,174661,549
Events in quadrant B4,290,609698,868
Events in quadrant C4,293,312614,702
Events in quadrant D5,252,621567,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154482
B0174472
C0175902
D0202382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6835821.199707%
B68352283.335772%
C68353104.535479%
D68354306.291149%

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 7710 6836 14 14 0.18% 0.20%
B 7710 6836 92 92 1.19% 1.35%
C 7710 6836 242 242 3.14% 3.54%
D 7710 6836 356 356 4.62% 5.21%

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 4 159 191108 994.01 769 748 191.5
A 10 17 150054 779.64 769 748 191.5
A 4 249 55166 284.16 769 748 191.5
B 0 186 662297 4081.71 752 723 162.1
B 0 171 273382 1682.22 752 723 162.1
B 8 234 99168 607.38 752 723 162.1
C 4 5 873261 4283.81 734 726 203.7
C 14 254 186877 913.93 734 726 203.7
C 12 252 114512 558.65 734 726 203.7
D 8 240 854195 4057.51 730 698 210.3
D 2 249 310387 1472.26 730 698 210.3
D 3 12 297867 1412.74 730 698 210.3

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