ASTROSAT CZTI

Data Quality Report

Orbit 52263

Creation date: 2025-07-21T18:30:03.972054
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_011T05_9000006474_52263cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52263cztM0_level2_quad_clean.evt
Size (bytes)822,525,12067,763,520
Size784.4 MB 64.6 MB
Events in quadrant A3,969,340571,689
Events in quadrant B6,884,768500,984
Events in quadrant C14,174,92230,564
Events in quadrant D4,938,699517,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162031
B0247241
C0462602
D0189561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61772994.840537%
B6177148524.040797%
C6176594696.275907%
D61772704.371054%

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 7242 6178 177 177 2.44% 2.87%
B 7242 6178 1003 1003 13.85% 16.24%
C 7241 6174 4706 4706 64.99% 76.22%
D 7242 6178 284 284 3.92% 4.60%

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 4 249 237822 1507.2 635 620 157.4
A 15 174 211440 1339.56 635 620 157.4
A 6 145 184558 1168.75 635 620 157.4
B 12 32 2967717 24339.59 566 547 121.9
B 10 44 372786 3053.46 566 547 121.9
B 4 171 310618 2543.5 566 547 121.9
C 15 158 10535528 150067.35 246 243 70.2
C 15 224 1631327 23233.59 246 243 70.2
C 15 178 486773 6930.26 246 243 70.2
D 6 42 1316168 7527.41 614 588 174.8
D 8 176 366251 2092.23 614 588 174.8
D 7 96 328585 1876.71 614 588 174.8

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