ASTROSAT CZTI

Data Quality Report

Orbit 58282

Creation date: 2026-07-06T22:22:50.786418
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_58282cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58282cztM0_level2_quad_clean.evt
Size (bytes)608,420,16078,727,680
Size580.2 MB 75.1 MB
Events in quadrant A3,109,395578,983
Events in quadrant B3,914,954604,958
Events in quadrant C3,014,729556,723
Events in quadrant D12,000,731211,312

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135351
B0158751
C0136351
D0397611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61881822.941176%
B61894046.527710%
C61891552.504443%
D6189400564.711585%

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 6983 6188 18 18 0.26% 0.29%
B 6984 6189 142 142 2.03% 2.29%
C 6984 6189 36 36 0.52% 0.58%
D 6984 6189 3713 3713 53.16% 59.99%

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 141638 837.68 681 663 168.3
A 0 12 123734 731.3 681 663 168.3
A 3 14 92287 544.44 681 663 168.3
B 4 206 717036 5110.99 656 632 140.2
B 0 153 121121 859.6 656 632 140.2
B 0 156 84367 597.38 656 632 140.2
C 6 223 199526 1101.46 657 652 180.6
C 13 3 84800 466.05 657 652 180.6
C 12 252 53040 290.15 657 652 180.6
D 12 110 9539156 75601.06 439 418 126.2
D 2 249 230859 1826.4 439 418 126.2
D 7 222 166647 1317.48 439 418 126.2

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