ASTROSAT CZTI

Data Quality Report

Orbit 16056

Creation date: 2024-06-27T17:17:22.043856
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/AS1G08_012T01_9000002370_16056cztM0_level2.evt modeM0/AS1G08_012T01_9000002370_16056cztM0_level2_quad_clean.evt
Size (bytes)610,320,960105,730,560
Size582.0 MB 100.8 MB
Events in quadrant A4,254,276656,863
Events in quadrant B4,210,268669,634
Events in quadrant C4,390,948650,143
Events in quadrant D5,055,315638,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182243
B0179642
C0184952
D0209322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8444941.113216%
B84441361.610611%
C84442553.019896%
D84443043.600189%

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 9470 8446 0 0 0.00% 0.00%
B 9470 8447 1 1 0.01% 0.01%
C 9470 8447 70 70 0.74% 0.83%
D 9470 8446 248 248 2.62% 2.94%

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 3 80 173865 813.96 1050 1029 212.3
A 15 223 30582 139.18 1050 1029 212.3
A 15 239 11421 48.94 1050 1029 212.3
B 12 111 25020 118.63 1051 1021 202.3
B 0 189 23511 111.17 1051 1021 202.3
B 11 111 21375 100.61 1051 1021 202.3
C 3 233 169492 708.38 1015 1022 237.8
C 14 238 156185 652.43 1015 1022 237.8
C 9 54 55613 229.54 1015 1022 237.8
D 1 52 1097260 4426.87 1015 987 247.6
D 2 152 47723 188.72 1015 987 247.6
D 4 239 43430 171.39 1015 987 247.6

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