ASTROSAT CZTI

Data Quality Report

Orbit 56792

Creation date: 2026-03-28T13:12:34.899921
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_083T03_9000006562_56792cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56792cztM0_level2_quad_clean.evt
Size (bytes)1,577,468,160363,127,680
Size1.5 GB 346.3 MB
Events in quadrant A14,912,9422,358,997
Events in quadrant B16,436,0152,479,277
Events in quadrant C12,570,3682,256,852
Events in quadrant D12,487,2972,133,927

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613144
B0667814
C0560374
D0563634

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256595292.061655%
B2565914065.479559%
C256604091.593920%
D256603461.348402%

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 27284 25660 162 162 0.59% 0.63%
B 27283 25660 725 725 2.66% 2.83%
C 27285 25662 122 122 0.45% 0.48%
D 27285 25663 140 140 0.51% 0.55%

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 3035505 4491.58 2754 2685 675.2
A 10 251 835474 1233.35 2754 2685 675.2
A 4 95 97390 140.26 2754 2685 675.2
B 8 128 2855951 4995.68 2694 2587 571.2
B 4 206 1115012 1947.64 2694 2587 571.2
B 5 185 396372 689.44 2694 2587 571.2
C 14 96 409881 556.9 2694 2669 731.2
C 9 38 392066 532.53 2694 2669 731.2
C 12 252 386036 524.29 2694 2669 731.2
D 2 249 1117166 1494.48 2679 2557 745.8
D 5 173 205841 272.57 2679 2557 745.8
D 2 236 164246 216.79 2679 2557 745.8

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