ASTROSAT CZTI

Data Quality Report

Orbit 08967

Creation date: 2024-06-27T15:39:33.359983
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/AS1G07_019T01_9000001244_08967cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08967cztM0_level2_quad_clean.evt
Size (bytes)1,009,376,640158,964,480
Size962.6 MB 151.6 MB
Events in quadrant A6,590,496997,958
Events in quadrant B8,213,264981,186
Events in quadrant C6,378,506987,923
Events in quadrant D8,508,592949,634

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284803
B0332672
C0281472
D0341862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12995930.715660%
B129957545.802232%
C129951611.238938%
D129955254.040015%

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 14705 12999 30 30 0.20% 0.23%
B 14705 12997 493 493 3.35% 3.79%
C 14705 12999 92 92 0.63% 0.71%
D 14705 12999 640 640 4.35% 4.92%

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 8 5 754936 2479.6 1486 1451 303.9
A 15 174 62788 201.85 1486 1451 303.9
A 5 16 30122 94.35 1486 1451 303.9
B 10 16 2235682 8007.07 1463 1423 279.0
B 0 214 65209 228.59 1463 1423 279.0
B 4 173 54173 189.04 1463 1423 279.0
C 4 254 688739 2029.74 1453 1459 338.6
C 14 234 14512 38.55 1453 1459 338.6
C 13 61 11125 28.55 1453 1459 338.6
D 1 52 1165900 3295.14 1440 1392 353.4
D 8 195 417681 1177.95 1440 1392 353.4
D 13 104 378271 1066.43 1440 1392 353.4

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