ASTROSAT CZTI

Data Quality Report

Orbit 43801

Creation date: 2024-06-27T22:55:55.756887
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_018T01_9000005906_43801cztM0_level2.fits modeM0/AS1A13_018T01_9000005906_43801cztM0_level2_quad_clean.evt
Size (bytes)2,035,837,440285,249,600
Size1.9 GB 272.0 MB
Events in quadrant A15,079,6901,991,944
Events in quadrant B12,061,9352,118,042
Events in quadrant C25,262,6681,585,048
Events in quadrant D21,422,0561,569,971

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0578222
B0492282
C0887892
D0773622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1989113796.932784%
B198929985.017092%
C19892539827.136537%
D19892349617.574904%

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 21001 19893 800 800 3.81% 4.02%
B 21002 19894 527 527 2.51% 2.65%
C 21002 19893 4719 4719 22.47% 23.72%
D 21002 19894 2594 2594 12.35% 13.04%

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 15 223 3290593 7059.83 2245 2200 465.8
A 10 83 2717442 5829.34 2245 2200 465.8
A 13 248 277808 591.7 2245 2200 465.8
B 5 235 1000132 2276.56 2246 2181 438.4
B 0 200 945842 2152.71 2246 2181 438.4
B 4 170 304260 689.11 2246 2181 438.4
C 15 174 13009562 27952.45 1982 1992 465.3
C 15 158 2743465 5891.25 1982 1992 465.3
C 3 233 860082 1843.98 1982 1992 465.3
D 12 33 6493228 11937.53 2100 2032 543.8
D 5 235 1339611 2459.85 2100 2032 543.8
D 12 2 696452 1277.06 2100 2032 543.8

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