ASTROSAT CZTI

Data Quality Report

Orbit 44907

Creation date: 2024-06-27T23:07:51.668410
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_017T02_9000006032_44907cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44907cztM0_level2_quad_clean.evt
Size (bytes)498,605,760102,602,880
Size475.5 MB 97.8 MB
Events in quadrant A4,849,348692,505
Events in quadrant B3,100,217721,683
Events in quadrant C3,941,919691,956
Events in quadrant D6,111,603591,192

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186543
B0128521
C0156261
D0223361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58551232.100769%
B5856400.683060%
C5856390.665984%
D585661210.450820%

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 7060 5856 34 34 0.48% 0.58%
B 7061 5857 10 10 0.14% 0.17%
C 7061 5857 23 23 0.33% 0.39%
D 7061 5857 492 492 6.97% 8.40%

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 1942923 13403.23 697 684 144.9
A 13 248 167091 1148.36 697 684 144.9
A 7 3 20891 139.45 697 684 144.9
B 0 155 63551 462.28 695 674 136.0
B 0 219 61610 448.0 695 674 136.0
B 0 168 55133 400.39 695 674 136.0
C 9 54 1154736 7151.26 688 695 161.4
C 15 208 27501 166.11 688 695 161.4
C 12 2 23096 138.81 688 695 161.4
D 1 52 941466 5579.29 667 645 168.6
D 12 33 594913 3524.15 667 645 168.6
D 13 249 588650 3487.0 667 645 168.6

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