ASTROSAT CZTI

Data Quality Report

Orbit 15179

Creation date: 2024-06-27T17:04:53.681151
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/AS1T02_068T01_9000002238_15179cztM0_level2.evt modeM0/AS1T02_068T01_9000002238_15179cztM0_level2_quad_clean.evt
Size (bytes)486,414,72089,268,480
Size463.9 MB 85.1 MB
Events in quadrant A3,849,750572,335
Events in quadrant B3,125,358580,591
Events in quadrant C3,264,622567,910
Events in quadrant D4,069,499548,747

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159692
B0133401
C0135291
D0165061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215430.691874%
B6215610.981496%
C6215330.530973%
D62155969.589702%

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 7316 6224 1 1 0.01% 0.02%
B 7316 6225 18 18 0.25% 0.29%
C 7316 6225 1 1 0.01% 0.02%
D 7316 6224 565 565 7.72% 9.08%

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 15 239 886256 5749.19 757 741 154.0
A 12 189 40581 258.66 757 741 154.0
A 0 226 6909 40.05 757 741 154.0
B 3 64 72071 495.9 757 738 143.8
B 4 48 26989 182.49 757 738 143.8
B 0 189 26191 176.95 757 738 143.8
C 3 233 382452 2226.81 737 741 171.4
C 13 61 5275 26.45 737 741 171.4
C 14 234 3554 16.41 737 741 171.4
D 2 33 1345919 7939.54 696 674 169.4
D 10 70 41914 243.4 696 674 169.4
D 2 234 22576 129.26 696 674 169.4

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