ASTROSAT CZTI

Data Quality Report

Orbit 20779

Creation date: 2024-06-27T18:19:30.250919
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/AS1A05_013T01_9000003070_20779cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20779cztM0_level2_quad_clean.evt
Size (bytes)601,404,480107,565,120
Size573.5 MB 102.6 MB
Events in quadrant A3,923,845686,019
Events in quadrant B4,505,866676,281
Events in quadrant C3,941,788660,274
Events in quadrant D5,268,610647,639

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01766
B01764
C01762
D01764

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017654534
B019308554
C017639503
D021769669

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0151
C0151
D0151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8453310.366734%
B8453901.064711%
C8466550.649657%
D84411661.966592%

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 10133 8595 0 0 0.00% 0.00%
B 10138 8594 29 29 0.29% 0.34%
C 10128 8594 1 1 0.01% 0.01%
D 10133 8589 106 106 1.05% 1.23%

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 0 226 8980 39.09 1019 999 204.2
A 3 137 8231 35.42 1019 999 204.2
A 12 194 7300 30.86 1019 999 204.2
B 7 220 329622 1719.99 1006 982 191.1
B 0 189 63970 329.66 1006 982 191.1
B 0 219 34478 175.31 1006 982 191.1
C 14 238 151882 665.54 969 973 226.7
C 7 247 9057 35.65 969 973 226.7
C 13 61 6796 25.68 969 973 226.7
D 1 52 539013 2290.69 978 950 234.9
D 1 20 375736 1595.57 978 950 234.9
D 1 239 326105 1384.28 978 950 234.9

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