ASTROSAT CZTI

Data Quality Report

Orbit 12623

Creation date: 2024-06-27T16:30:08.142439
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_071T01_9000001874_12623cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12623cztM0_level2_quad_clean.evt
Size (bytes)474,868,80094,792,320
Size452.9 MB 90.4 MB
Events in quadrant A2,924,914609,550
Events in quadrant B3,496,350622,291
Events in quadrant C2,973,927622,921
Events in quadrant D4,558,938576,727

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131013
B0146512
C0131822
D0180752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301300.476115%
B63011432.269481%
C6301230.365021%
D63011452.301222%

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 7467 6303 0 0 0.00% 0.00%
B 7467 6302 52 52 0.70% 0.83%
C 7467 6303 4 4 0.05% 0.06%
D 7467 6303 76 76 1.02% 1.21%

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 12 189 25948 164.44 754 737 153.3
A 0 226 6732 39.1 754 737 153.3
A 12 194 5687 32.29 754 737 153.3
B 0 85 192238 1334.77 758 739 143.5
B 4 239 142410 987.46 758 739 143.5
B 11 51 102414 708.69 758 739 143.5
C 15 208 46910 268.49 746 751 171.9
C 14 234 16782 93.25 746 751 171.9
C 13 61 5434 27.24 746 751 171.9
D 10 157 1055944 5999.79 725 705 175.9
D 1 52 545129 3095.44 725 705 175.9
D 13 249 84024 473.73 725 705 175.9

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