ASTROSAT CZTI

Data Quality Report

Orbit 20572

Creation date: 2024-06-27T18:16:59.226299
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_088T03_9000003042_20572cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20572cztM0_level2_quad_clean.evt
Size (bytes)484,329,60097,464,960
Size461.9 MB 92.9 MB
Events in quadrant A3,329,867622,570
Events in quadrant B3,525,210620,324
Events in quadrant C3,412,286608,470
Events in quadrant D3,909,152596,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147682
B0151982
C0148352
D0166472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7235450.621977%
B7235851.174845%
C7235751.036628%
D7235700.967519%

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 7705 7237 0 0 0.00% 0.00%
B 7705 7237 12 12 0.16% 0.17%
C 7705 7237 0 0 0.00% 0.00%
D 7705 7237 25 25 0.32% 0.35%

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 0 226 7449 37.9 866 845 174.2
A 3 137 7400 37.62 866 845 174.2
A 12 194 6048 29.86 866 845 174.2
B 7 220 61869 372.47 862 841 163.8
B 0 230 40573 242.5 862 841 163.8
B 0 219 21715 127.4 862 841 163.8
C 14 238 129844 652.68 840 847 197.6
C 9 54 5949 25.81 840 847 197.6
C 13 61 5698 24.54 840 847 197.6
D 1 52 470321 2295.14 846 820 204.6
D 1 20 67512 326.02 846 820 204.6
D 7 238 35939 171.68 846 820 204.6

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