ASTROSAT CZTI

Data Quality Report

Orbit 51192

Creation date: 2025-03-17T11:24:05.628685
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/AS1C07_001T01_9000006454_51192cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51192cztM0_level2_quad_clean.evt
Size (bytes)56,882,8809,607,680
Size54.2 MB 9.2 MB
Events in quadrant A484,90363,756
Events in quadrant B456,56571,017
Events in quadrant C673,70526,855
Events in quadrant D421,09862,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076125529
B070404966
C01681414442
D079585908

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06345
B06039
C06444
D06330

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90430.331858%
B96710.103413%
C522529.961686%
D96830.309917%

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 1048573 1264 4 4 0.00% 0.32%
B 3073 1400 0 0 0.00% 0.00%
C 3130 806 32 32 1.02% 3.97%
D 2962 1376 0 0 0.00% 0.00%

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 62 71707 3168.0 84 82 22.6
A 14 254 29360 1294.98 84 82 22.6
A 9 160 19982 880.18 84 82 22.6
B 10 254 28076 1332.1 90 88 21.0
B 10 60 23014 1091.17 90 88 21.0
B 8 128 12053 569.48 90 88 21.0
C 4 12 225968 15728.85 45 44 14.4
C 12 247 116746 8124.8 45 44 14.4
C 15 229 67375 4687.59 45 44 14.4
D 15 94 29799 1175.06 85 82 25.3
D 11 245 10490 411.55 85 82 25.3
D 6 30 6855 267.82 85 82 25.3

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