ASTROSAT CZTI

Data Quality Report

Orbit 57549

Creation date: 2026-05-18T10:11:49.988978
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_113T09_9000006574_57549cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57549cztM0_level2_quad_clean.evt
Size (bytes)532,572,48094,501,440
Size507.9 MB 90.1 MB
Events in quadrant A3,553,314644,407
Events in quadrant B3,530,437690,974
Events in quadrant C4,126,212609,971
Events in quadrant D7,978,430444,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155212
B0151162
C0170272
D0283432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67641382.040213%
B67641502.217623%
C67642002.956830%
D6764172625.517445%

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 7724 6764 83 83 1.07% 1.23%
B 7724 6764 56 56 0.73% 0.83%
C 7723 6763 144 144 1.86% 2.13%
D 7724 6764 1701 1701 22.02% 25.15%

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 10 251 643971 3553.39 732 713 181.0
A 4 249 26531 142.62 732 713 181.0
A 3 128 21196 113.15 732 713 181.0
B 4 206 180802 1154.53 726 698 156.0
B 10 246 86523 550.17 726 698 156.0
B 4 201 61094 387.16 726 698 156.0
C 15 224 1118701 5737.3 713 705 194.9
C 12 254 80883 411.46 713 705 194.9
C 6 223 52737 267.02 713 705 194.9
D 15 142 5120641 29547.46 617 590 173.3
D 15 94 105258 604.03 617 590 173.3
D 8 160 92680 531.44 617 590 173.3

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