ASTROSAT CZTI

Data Quality Report

Orbit 45899

Creation date: 2024-06-27T23:17:29.019878
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/AS1A13_033T02_9000006140_45899cztM0_level2.fits modeM0/AS1A13_033T02_9000006140_45899cztM0_level2_quad_clean.evt
Size (bytes)677,977,920118,578,240
Size646.6 MB 113.1 MB
Events in quadrant A6,564,958818,951
Events in quadrant B9,574,286704,203
Events in quadrant C3,436,222808,600
Events in quadrant D4,927,851724,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239970
B0338700
C0158410
D0198980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7667821.069519%
B7668165021.517997%
C766880.104330%
D76682242.921231%

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 7667 7667 2 2 0.03% 0.03%
B 7667 7667 1140 1140 14.87% 14.87%
C 7668 7668 3 3 0.04% 0.04%
D 7668 7668 189 189 2.46% 2.46%

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 10 83 3071318 16368.94 885 864 187.6
A 14 235 51975 272.48 885 864 187.6
A 3 137 10462 51.17 885 864 187.6
B 3 112 5038651 30804.29 815 788 163.5
B 0 183 1062219 6490.18 815 788 163.5
B 0 245 74011 447.73 815 788 163.5
C 2 14 20605 95.74 865 869 206.1
C 12 2 20117 93.37 865 869 206.1
C 12 249 9394 41.35 865 869 206.1
D 12 2 579506 2599.88 861 832 222.6
D 1 52 462798 2075.53 861 832 222.6
D 12 233 189859 849.26 861 832 222.6

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