ASTROSAT CZTI

Data Quality Report

Orbit 20210705_A10_082T10_9000004512_level2

Creation date: 2025-12-27T09:47:34.763506
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/AS1A10_082T10_9000004512cztM0_level2.fits modeM0/AS1A10_082T10_9000004512cztM0_level2_quad_clean.evt
Size (bytes)293,022,720214,168,320
Size279.4 MB 204.2 MB
Events in quadrant A1,916,4281,261,005
Events in quadrant B1,714,6281,161,649
Events in quadrant C1,817,8861,175,666
Events in quadrant D1,557,8561,019,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0583300
B0925960
C0613810
D01033150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271305762.123111%
B2713021968.094360%
C2713010003.685957%
D2713023148.529303%

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 34215 27130 0 0 0.00% 0.00%
B 34214 27125 0 0 0.00% 0.00%
C 34215 27129 0 0 0.00% 0.00%
D 34215 26929 0 0 0.00% 0.00%

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 29 1862 11.65 499 473 119.2
A 7 110 1446 8.16 499 473 119.2
A 0 30 1411 7.87 499 473 119.2
B 2 9 1381 10.76 454 439 87.6
B 3 80 1247 9.23 454 439 87.6
B 5 255 1137 7.97 454 439 87.6
C 12 241 1281 6.86 481 456 120.3
C 3 187 1232 6.45 481 456 120.3
C 3 126 1213 6.29 481 456 120.3
D 15 46 1169 6.45 445 409 117.8
D 10 189 1119 6.03 445 409 117.8
D 7 3 1091 5.79 445 409 117.8

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