ASTROSAT CZTI

Data Quality Report

Orbit 44665

Creation date: 2024-06-27T23:05:04.053494
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_072T01_9000006008_44665cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44665cztM0_level2_quad_clean.evt
Size (bytes)456,477,120110,306,880
Size435.3 MB 105.2 MB
Events in quadrant A5,125,556731,156
Events in quadrant B3,124,718768,669
Events in quadrant C3,034,796730,281
Events in quadrant D5,079,714632,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021267243
B014439116
C014358113
D020250209

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68261762.578377%
B6857751.093773%
C6857150.218755%
D68534386.391361%

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 7745 6900 25 25 0.32% 0.36%
B 7745 6904 9 9 0.12% 0.13%
C 7745 6905 5 5 0.06% 0.07%
D 7745 6907 326 326 4.21% 4.72%

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 2074917 13479.34 744 728 153.9
A 13 248 140418 907.79 744 728 153.9
A 10 248 23878 150.44 744 728 153.9
B 5 172 46695 314.36 749 728 146.2
B 4 171 35055 234.76 749 728 146.2
B 0 246 22325 147.7 749 728 146.2
C 14 254 58474 339.52 728 732 170.1
C 12 2 55422 321.58 728 732 170.1
C 3 233 37530 216.37 728 732 170.1
D 2 249 901042 5142.81 702 679 175.1
D 1 52 612783 3496.29 702 679 175.1
D 13 249 444005 2532.25 702 679 175.1

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