ASTROSAT CZTI

Data Quality Report

Orbit 13842

Creation date: 2024-06-27T16:46:48.988321
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_199T01_9000002040_13842cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13842cztM0_level2_quad_clean.evt
Size (bytes)664,401,60089,760,960
Size633.6 MB 85.6 MB
Events in quadrant A4,219,833539,337
Events in quadrant B4,407,550545,934
Events in quadrant C4,265,583536,538
Events in quadrant D6,639,764493,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182602
B0185801
C0183611
D0255371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86815246.036171%
B86815596.439350%
C86813714.273701%
D86818239.480475%

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 8877 8682 0 0 0.00% 0.00%
B 8877 8682 9 9 0.10% 0.10%
C 8877 8682 0 0 0.00% 0.00%
D 8877 8682 395 395 4.45% 4.55%

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 8 15 16708 69.59 1090 1060 224.9
A 0 226 9706 38.45 1090 1060 224.9
A 12 194 8274 32.08 1090 1060 224.9
B 0 219 50369 230.71 1087 1055 213.7
B 4 80 48288 220.97 1087 1055 213.7
B 3 209 38941 177.24 1087 1055 213.7
C 3 233 73119 289.08 1071 1074 249.2
C 12 4 17332 65.24 1071 1074 249.2
C 13 61 7803 27.0 1071 1074 249.2
D 1 52 1666630 6508.64 1040 1010 255.9
D 13 122 420875 1640.68 1040 1010 255.9
D 10 157 282467 1099.83 1040 1010 255.9

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