ASTROSAT CZTI

Data Quality Report

Orbit 15878

Creation date: 2024-06-27T17:14:40.492666
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/AS1A04_143T01_9000002344_15878cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15878cztM0_level2_quad_clean.evt
Size (bytes)430,830,720106,729,920
Size410.9 MB 101.8 MB
Events in quadrant A3,151,398702,966
Events in quadrant B3,280,014734,404
Events in quadrant C3,194,163693,657
Events in quadrant D3,007,651675,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132023
B0136012
C0132432
D0129182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6108180.294695%
B6108350.573019%
C6108621.015062%
D6108150.245580%

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 7539 6110 0 0 0.00% 0.00%
B 7539 6110 3 3 0.04% 0.05%
C 7539 6110 0 0 0.00% 0.00%
D 7539 6110 3 3 0.04% 0.05%

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 57303 353.18 799 784 160.0
A 12 96 11551 67.28 799 784 160.0
A 0 226 7217 40.2 799 784 160.0
B 4 173 26511 168.59 813 795 152.5
B 12 111 17224 107.7 813 795 152.5
B 11 111 14478 89.7 813 795 152.5
C 14 238 120975 663.63 780 789 181.1
C 3 233 15150 79.3 780 789 181.1
C 0 207 11374 58.45 780 789 181.1
D 1 52 27686 141.04 782 761 190.9
D 2 234 24035 121.92 782 761 190.9
D 12 218 15104 75.13 782 761 190.9

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