ASTROSAT CZTI

Data Quality Report

Orbit 55930

Creation date: 2026-02-05T11:27:37.449715
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_030T02_9000006544_55930cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55930cztM0_level2_quad_clean.evt
Size (bytes)700,496,640112,314,240
Size668.0 MB 107.1 MB
Events in quadrant A6,743,214670,667
Events in quadrant B3,782,926836,758
Events in quadrant C6,122,468701,229
Events in quadrant D8,631,782610,185

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261871
B0176151
C0242311
D0316511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8374119714.294244%
B83741271.516599%
C83746447.690471%
D8374135716.204920%

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 8694 8375 1177 1177 13.54% 14.05%
B 8694 8374 12 12 0.14% 0.14%
C 8694 8375 550 550 6.33% 6.57%
D 8694 8375 1397 1397 16.07% 16.68%

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 12 115 3367883 16086.33 841 817 209.3
A 12 194 32524 151.48 841 817 209.3
A 4 206 29047 134.87 841 817 209.3
B 7 252 76684 398.21 889 854 190.4
B 7 0 69269 359.27 889 854 190.4
B 2 249 31837 162.7 889 854 190.4
C 12 252 1642830 7044.5 849 839 233.1
C 13 3 684912 2934.82 849 839 233.1
C 15 199 371253 1589.16 849 839 233.1
D 11 129 4302517 18641.76 817 780 230.8
D 7 129 555940 2405.81 817 780 230.8
D 6 42 249670 1078.58 817 780 230.8

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