ASTROSAT CZTI

Data Quality Report

Orbit 24770

Creation date: 2024-06-27T19:09:42.206250
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/AS1A07_147T01_9000003624_24770cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24770cztM0_level2_quad_clean.evt
Size (bytes)927,771,840173,136,960
Size884.8 MB 165.1 MB
Events in quadrant A5,835,5371,140,756
Events in quadrant B6,433,1511,142,075
Events in quadrant C8,937,6591,061,823
Events in quadrant D6,086,0411,075,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246722
B0263834
C0339502
D0256272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02440
B02440
C02440
D02440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119022061.730802%
B119012732.293925%
C119029267.780205%
D119031491.251785%

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 13052 11904 1 1 0.01% 0.01%
B 13052 11904 16 16 0.12% 0.13%
C 13052 11904 178 178 1.36% 1.50%
D 13053 11905 6 6 0.05% 0.05%

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 96 17554 53.01 1505 1474 303.3
A 13 254 15363 45.79 1505 1474 303.3
A 4 2 15190 45.22 1505 1474 303.3
B 3 64 434889 1508.87 1482 1444 287.3
B 10 246 112776 387.56 1482 1444 287.3
B 12 111 35367 118.09 1482 1444 287.3
C 7 247 3181859 9655.86 1412 1419 329.4
C 14 238 220798 666.04 1412 1419 329.4
C 10 91 23184 66.08 1412 1419 329.4
D 8 195 323840 901.9 1463 1420 357.5
D 12 233 128711 356.07 1463 1420 357.5
D 1 52 117797 325.54 1463 1420 357.5

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