ASTROSAT CZTI

Data Quality Report

Orbit 04000

Creation date: 2024-06-27T14:36:12.559356
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/AS1G05_247T01_9000000512_04000cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_04000cztM0_level2_quad_clean.evt
Size (bytes)497,157,120118,889,280
Size474.1 MB 113.4 MB
Events in quadrant A3,760,454767,771
Events in quadrant B3,687,697775,136
Events in quadrant C3,302,524775,834
Events in quadrant D3,779,185743,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165892
B0161311
C0156601
D0170301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77421351.743735%
B7742750.968742%
C7742390.503746%
D77421481.911651%

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 7972 7743 45 45 0.56% 0.58%
B 7972 7743 4 4 0.05% 0.05%
C 7972 7743 0 0 0.00% 0.00%
D 7972 7743 92 92 1.15% 1.19%

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 50 239573 1361.26 857 837 175.4
A 13 251 135938 770.34 857 837 175.4
A 0 118 33805 187.98 857 837 175.4
B 4 81 126335 745.02 869 846 168.4
B 3 0 120833 712.36 869 846 168.4
B 15 204 52657 307.6 869 846 168.4
C 13 61 6993 31.44 844 846 195.5
C 7 205 3651 14.34 844 846 195.5
C 12 4 2706 9.51 844 846 195.5
D 2 232 426765 2111.82 837 811 201.7
D 2 32 37077 179.8 837 811 201.7
D 13 239 36386 176.38 837 811 201.7

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