ASTROSAT CZTI

Data Quality Report

Orbit 54375

Creation date: 2025-10-16T20:00:09.302617
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_126T19_9000006518_54375cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54375cztM0_level2_quad_clean.evt
Size (bytes)531,414,72087,082,560
Size506.8 MB 83.0 MB
Events in quadrant A3,212,976599,703
Events in quadrant B5,806,474564,497
Events in quadrant C6,179,350483,696
Events in quadrant D3,967,058533,101

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015418
B015315
C015418
D01539

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169982760
B0279166356
C0292106200
D0197943485

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6524410.628449%
B644982612.808187%
C6498105216.189597%
D6522650.996627%

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 7733 6926 10 10 0.13% 0.14%
B 7736 6935 487 487 6.30% 7.02%
C 7736 7021 835 835 10.79% 11.89%
D 7241 6935 53 53 0.73% 0.76%

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 0 8 154072 887.36 703 685 172.9
A 12 115 92028 528.43 703 685 172.9
A 4 78 64339 368.24 703 685 172.9
B 10 14 2197682 15544.74 657 633 141.3
B 7 0 704265 4978.4 657 633 141.3
B 5 172 152380 1073.65 657 633 141.3
C 1 241 2488933 14391.46 633 625 172.9
C 13 3 490860 2835.34 633 625 172.9
C 15 189 141695 815.9 633 625 172.9
D 8 176 407856 2156.16 670 639 188.9
D 3 12 263461 1391.61 670 639 188.9
D 7 70 217809 1149.89 670 639 188.9

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