ASTROSAT CZTI

Data Quality Report

Orbit 20808

Creation date: 2024-06-27T18:19:48.555774
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/AS1A05_013T01_9000003070_20808cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20808cztM0_level2_quad_clean.evt
Size (bytes)1,313,317,440237,476,160
Size1.2 GB 226.5 MB
Events in quadrant A8,559,7031,520,520
Events in quadrant B9,400,9141,507,629
Events in quadrant C8,565,5711,468,119
Events in quadrant D11,999,4551,423,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376953
B0399053
C0375733
D0482193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18478800.432947%
B184791730.936198%
C184791430.773851%
D184796323.420098%

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 20403 18479 7 7 0.03% 0.04%
B 20404 18480 37 37 0.18% 0.20%
C 20404 18480 1 1 0.00% 0.01%
D 20404 18480 585 585 2.87% 3.17%

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 12 96 79572 175.39 2203 2155 441.4
A 0 226 19057 38.29 2203 2155 441.4
A 3 137 17980 35.85 2203 2155 441.4
B 7 220 374376 909.02 2180 2124 409.5
B 0 189 160853 387.61 2180 2124 409.5
B 4 216 80725 191.94 2180 2124 409.5
C 14 238 329609 672.59 2094 2104 486.9
C 9 54 43232 84.46 2094 2104 486.9
C 3 233 17912 32.46 2094 2104 486.9
D 1 20 2365123 4623.17 2114 2051 511.1
D 7 38 409042 796.25 2114 2051 511.1
D 9 1 336642 654.6 2114 2051 511.1

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