ASTROSAT CZTI

Data Quality Report

Orbit 55145

Creation date: 2025-12-07T15:30:02.620423
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_022T16_9000006532_55145cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55145cztM0_level2_quad_clean.evt
Size (bytes)672,756,48089,651,520
Size641.6 MB 85.5 MB
Events in quadrant A7,685,707530,711
Events in quadrant B4,003,065657,310
Events in quadrant C3,446,624606,331
Events in quadrant D9,231,995438,507

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402
B01402
C01404
D01402

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028513827
B017401259
C015491312
D032657383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6906140620.359108%
B69203815.505780%
C691390.130189%
D6912184326.663773%

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 6922 6908 1307 1307 18.88% 18.92%
B 6930 6927 337 337 4.86% 4.87%
C 6926 6921 7 7 0.10% 0.10%
D 7022 6922 1948 1948 27.74% 28.14%

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 3 78 4399264 26881.56 660 642 163.6
A 15 32 526333 3212.69 660 642 163.6
A 0 8 109344 664.32 660 642 163.6
B 2 249 867566 5738.45 694 668 151.1
B 4 81 181650 1198.01 694 668 151.1
B 5 185 90432 594.19 694 668 151.1
C 1 16 348905 1809.83 699 690 192.4
C 14 254 106947 552.26 699 690 192.4
C 13 3 44857 229.56 699 690 192.4
D 11 129 5853457 33375.71 623 595 175.4
D 3 12 272962 1553.16 623 595 175.4
D 15 94 148918 845.81 623 595 175.4

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