ASTROSAT CZTI

Data Quality Report

Orbit 53076

Creation date: 2025-07-21T12:55:07.899636
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/AS1C09_011T07_9000006488_53076cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53076cztM0_level2_quad_clean.evt
Size (bytes)834,027,84079,770,240
Size795.4 MB 76.1 MB
Events in quadrant A15,643,925125,863
Events in quadrant B3,617,340678,263
Events in quadrant C6,002,343579,562
Events in quadrant D5,090,469564,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0509989
B0157582
C0226832
D0198602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6693567884.834902%
B66931392.076797%
C66935888.785298%
D66933685.498282%

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 7813 6693 4927 4927 63.06% 73.61%
B 7813 6694 95 95 1.22% 1.42%
C 7813 6694 473 473 6.05% 7.07%
D 7813 6694 343 343 4.39% 5.12%

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 9 191 13661047 132383.8 404 393 103.2
A 3 14 116427 1124.47 404 393 103.2
A 7 206 103005 994.4 404 393 103.2
B 1 255 510050 3478.21 684 660 146.5
B 4 81 127637 867.02 684 660 146.5
B 10 128 79049 535.26 684 660 146.5
C 15 224 2497805 13901.4 650 643 179.6
C 9 38 300095 1667.01 650 643 179.6
C 13 3 148704 824.23 650 643 179.6
D 12 17 733001 3904.63 654 626 187.6
D 1 241 633754 3375.5 654 626 187.6
D 3 12 467866 2491.07 654 626 187.6

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