ASTROSAT CZTI

Data Quality Report

Orbit 30153

Creation date: 2024-06-27T20:11:34.689990
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/AS1A10_097T03_9000004336_30153cztM0_level2.evt modeM0/AS1A10_097T03_9000004336_30153cztM0_level2_quad_clean.evt
Size (bytes)803,185,92080,968,320
Size766.0 MB 77.2 MB
Events in quadrant A2,989,613545,444
Events in quadrant B4,673,032548,567
Events in quadrant C12,136,759411,684
Events in quadrant D4,126,598532,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125121
B0179963
C0400881
D0161821

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5905560.948349%
B59041482.506775%
C5904429372.713415%
D59041242.100271%

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 7010 5906 5 5 0.07% 0.08%
B 7009 5905 2 2 0.03% 0.03%
C 7009 5904 3359 3359 47.92% 56.89%
D 7009 5905 68 68 0.97% 1.15%

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 13 66730 434.68 754 739 151.8
A 8 192 11235 69.14 754 739 151.8
A 13 254 11148 68.56 754 739 151.8
B 6 159 1722425 12177.11 743 724 141.4
B 12 111 16883 114.29 743 724 141.4
B 11 111 15442 104.1 743 724 141.4
C 3 233 9823922 75373.32 561 566 130.3
C 14 238 91568 698.25 561 566 130.3
C 2 114 10964 79.78 561 566 130.3
D 12 227 639861 3616.41 744 726 176.7
D 8 195 536068 3029.12 744 726 176.7
D 13 249 54463 304.06 744 726 176.7

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