ASTROSAT CZTI

Data Quality Report

Orbit 05820

Creation date: 2024-06-27T14:59:48.295006
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/AS1G06_168T07_9000000750_05820cztM0_level2.evt modeM0/AS1G06_168T07_9000000750_05820cztM0_level2_quad_clean.evt
Size (bytes)386,971,20069,459,840
Size369.0 MB 66.2 MB
Events in quadrant A3,201,843421,018
Events in quadrant B2,743,243429,937
Events in quadrant C2,669,008428,863
Events in quadrant D2,705,245412,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01224
B01224
C01222
D01224

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013831514
B012414461
C012375439
D012679442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870691.175468%
B5871440.749446%
C5879370.629359%
D5882530.901054%

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 7232 5971 17 17 0.24% 0.28%
B 7232 5982 0 0 0.00% 0.00%
C 7232 5969 0 0 0.00% 0.00%
D 7232 5979 14 14 0.19% 0.23%

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 15 236 454898 3288.92 684 669 138.1
A 15 223 97395 700.36 684 669 138.1
A 15 174 10373 70.26 684 669 138.1
B 15 204 31653 237.67 694 678 130.3
B 4 81 12772 92.8 694 678 130.3
B 12 111 12220 88.56 694 678 130.3
C 9 16 10064 59.99 679 681 156.4
C 8 79 6985 40.31 679 681 156.4
C 13 61 5426 30.34 679 681 156.4
D 11 241 45465 268.3 678 658 167.0
D 2 206 42129 248.32 678 658 167.0
D 8 195 15618 89.58 678 658 167.0

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