ASTROSAT CZTI

Data Quality Report

Orbit 27652

Creation date: 2024-06-27T19:42:37.404892
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/AS1T03_257T01_9000003976_27652cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27652cztM0_level2_quad_clean.evt
Size (bytes)825,865,92073,624,320
Size787.6 MB 70.2 MB
Events in quadrant A3,843,562509,792
Events in quadrant B5,254,760503,362
Events in quadrant C3,975,211493,494
Events in quadrant D11,397,846167,605

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165530
B0207980
C0169560
D0392440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79662723.414512%
B79666598.272659%
C79652973.728814%
D7965439455.166353%

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 8011 7966 0 0 0.00% 0.00%
B 8011 7966 268 268 3.35% 3.36%
C 8010 7965 4 4 0.05% 0.05%
D 8010 7966 2419 2419 30.20% 30.37%

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 6 16 29932 144.07 986 963 201.1
A 13 254 14159 65.63 986 963 201.1
A 3 137 9859 44.24 986 963 201.1
B 10 245 1364811 7273.69 967 941 187.5
B 12 111 23663 121.18 967 941 187.5
B 11 111 21526 109.78 967 941 187.5
C 14 238 148779 662.47 949 956 223.1
C 2 16 113442 504.1 949 956 223.1
C 8 128 6821 26.28 949 956 223.1
D 1 52 9039121 64813.27 575 557 139.5
D 12 233 99980 712.94 575 557 139.5
D 2 250 35170 248.2 575 557 139.5

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