ASTROSAT CZTI

Data Quality Report

Orbit 53014

Creation date: 2025-07-17T09:15:22.765896
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_53014cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53014cztM0_level2_quad_clean.evt
Size (bytes)2,776,870,080159,635,520
Size2.6 GB 152.2 MB
Events in quadrant A41,795,50338,844
Events in quadrant B10,353,0651,587,104
Events in quadrant C21,938,2771,163,271
Events in quadrant D27,418,952888,579

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01354582
B0429772
C0768322
D0930232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167271640498.068990%
B167277164.280505%
C16728413324.707078%
D16728658839.383070%

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 17606 16726 15760 15760 89.51% 94.22%
B 17607 16729 502 502 2.85% 3.00%
C 17608 16730 3542 3542 20.12% 21.17%
D 17608 16730 5645 5645 32.06% 33.74%

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 35953443 251837.94 548 534 142.8
A 15 190 2545955 17829.81 548 534 142.8
A 7 206 538003 3764.79 548 534 142.8
B 8 128 948846 2668.06 1675 1616 355.0
B 2 249 691168 1942.26 1675 1616 355.0
B 10 128 656599 1844.89 1675 1616 355.0
C 15 224 8860229 21202.01 1514 1497 417.8
C 1 16 1727989 4132.09 1514 1497 417.8
C 15 148 1556155 3720.83 1514 1497 417.8
D 2 62 13938268 34061.71 1403 1341 409.2
D 8 176 4812866 11759.32 1403 1341 409.2
D 15 78 709466 1730.65 1403 1341 409.2

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