ASTROSAT CZTI

Data Quality Report

Orbit 22195

Creation date: 2024-06-27T18:37:58.304546
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/AS1A07_065T01_9000003284_22195cztM0_level2.evt modeM0/AS1A07_065T01_9000003284_22195cztM0_level2_quad_clean.evt
Size (bytes)494,850,24074,871,360
Size471.9 MB 71.4 MB
Events in quadrant A3,447,132448,572
Events in quadrant B3,568,828450,225
Events in quadrant C3,487,074432,066
Events in quadrant D3,988,222428,695

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148851
B0151221
C0149361
D0166201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288891.221186%
B7289971.330772%
C72891371.879545%
D72891472.016738%

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 7633 7289 0 0 0.00% 0.00%
B 7634 7290 0 0 0.00% 0.00%
C 7634 7290 0 0 0.00% 0.00%
D 7634 7290 81 81 1.06% 1.11%

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 13 254 13542 69.79 893 875 181.5
A 3 137 7697 37.58 893 875 181.5
A 0 226 7560 36.83 893 875 181.5
B 0 190 39974 227.72 885 862 171.8
B 4 171 22384 125.31 885 862 171.8
B 12 111 21055 117.57 885 862 171.8
C 14 238 134560 664.02 853 857 201.4
C 10 22 19756 93.86 853 857 201.4
C 10 91 8586 38.39 853 857 201.4
D 1 52 574362 2716.64 868 841 211.1
D 12 227 72348 338.71 868 841 211.1
D 2 234 35668 164.97 868 841 211.1

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