ASTROSAT CZTI

Data Quality Report

Orbit 58315

Creation date: 2026-07-08T22:29:20.661422
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_044T03_9000006588_58315cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58315cztM0_level2_quad_clean.evt
Size (bytes)579,689,28095,976,000
Size552.8 MB 91.5 MB
Events in quadrant A4,742,245641,730
Events in quadrant B7,963,347539,255
Events in quadrant C3,948,939634,020
Events in quadrant D4,256,248599,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190640
B0284510
C0168320
D0173440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70513835.431854%
B7051187526.591973%
C70501031.460993%
D7050540.765957%

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 7051 7051 310 310 4.40% 4.40%
B 7051 7051 1195 1195 16.95% 16.95%
C 7050 7050 88 88 1.25% 1.25%
D 7050 7050 49 49 0.70% 0.70%

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 12 114 569920 2983.49 765 744 190.8
A 15 233 543861 2846.9 765 744 190.8
A 10 251 387335 2026.42 765 744 190.8
B 4 206 4105767 28200.9 673 649 145.6
B 3 238 227469 1558.18 673 649 145.6
B 2 249 180453 1235.2 673 649 145.6
C 15 198 331586 1583.11 754 746 209.0
C 9 38 174497 831.42 754 746 209.0
C 8 7 149521 711.91 754 746 209.0
D 11 129 382709 1779.9 756 722 214.6
D 12 110 260731 1211.53 756 722 214.6
D 11 176 135703 628.95 756 722 214.6

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