ASTROSAT CZTI

Data Quality Report

Orbit 19670

Creation date: 2024-06-27T18:05:36.357234
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/AS1T03_037T01_9000002930_19670cztM0_level2.evt modeM0/AS1T03_037T01_9000002930_19670cztM0_level2_quad_clean.evt
Size (bytes)286,954,56061,859,520
Size273.7 MB 59.0 MB
Events in quadrant A1,978,802400,484
Events in quadrant B2,176,595416,522
Events in quadrant C2,166,801396,089
Events in quadrant D2,101,879384,547

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081651
B087971
C088541
D087211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3902160.410046%
B3902461.178883%
C3902481.230138%
D3902220.563813%

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 5252 3903 0 0 0.00% 0.00%
B 5252 3903 11 11 0.21% 0.28%
C 5252 3903 0 0 0.00% 0.00%
D 5252 3903 17 17 0.32% 0.44%

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 11 29 20969 202.33 508 499 101.2
A 0 226 4377 38.33 508 499 101.2
A 3 137 3827 32.9 508 499 101.2
B 0 198 68583 716.68 511 499 95.0
B 4 216 43174 449.21 511 499 95.0
B 4 171 35036 363.55 511 499 95.0
C 3 233 120956 1036.78 499 502 116.2
C 14 238 78510 671.43 499 502 116.2
C 9 221 22747 191.46 499 502 116.2
D 1 20 113968 939.17 500 486 120.8
D 12 218 98769 813.38 500 486 120.8
D 2 234 15870 127.32 500 486 120.8

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