ASTROSAT CZTI

Data Quality Report

Orbit 15622

Creation date: 2024-06-27T17:11:16.440387
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/AS1T02_086T01_9000002316_15622cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15622cztM0_level2_quad_clean.evt
Size (bytes)530,006,400114,410,880
Size505.5 MB 109.1 MB
Events in quadrant A3,727,411740,495
Events in quadrant B4,170,898743,367
Events in quadrant C3,642,914731,239
Events in quadrant D3,988,275715,444

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161242
B0173271
C0159971
D0168331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76901261.638492%
B76902192.847854%
C76901441.872562%
D7690941.222367%

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 7841 7691 1 1 0.01% 0.01%
B 7841 7692 71 71 0.91% 0.92%
C 7841 7691 0 0 0.00% 0.00%
D 7841 7692 21 21 0.27% 0.27%

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 15 157 68917 355.43 939 915 191.3
A 3 80 34529 175.69 939 915 191.3
A 13 248 9917 47.05 939 915 191.3
B 3 209 172983 970.61 928 906 177.3
B 5 65 161015 903.1 928 906 177.3
B 0 85 86646 483.62 928 906 177.3
C 14 238 136715 651.86 891 894 208.4
C 3 233 19768 90.58 891 894 208.4
C 13 61 6541 27.1 891 894 208.4
D 1 52 303265 1368.86 910 883 220.9
D 12 110 61269 273.36 910 883 220.9
D 2 16 45540 202.16 910 883 220.9

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