ASTROSAT CZTI

Data Quality Report

Orbit 32135

Creation date: 2024-06-27T20:36:53.111966
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/AS1T04_051T01_9000004686_32135cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32135cztM0_level2_quad_clean.evt
Size (bytes)641,871,36072,993,600
Size612.1 MB 69.6 MB
Events in quadrant A3,510,409454,951
Events in quadrant B6,864,836426,787
Events in quadrant C3,936,064451,929
Events in quadrant D4,702,034436,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140702
B0245912
C0156802
D0185594

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298480.762147%
B629867410.701810%
C62982634.175929%
D62971422.255042%

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 7673 6299 0 0 0.00% 0.00%
B 7673 6299 374 374 4.87% 5.94%
C 7673 6299 52 52 0.68% 0.83%
D 7672 6298 75 75 0.98% 1.19%

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 13 6 12151 63.37 907 894 177.6
A 13 254 12043 62.76 907 894 177.6
A 3 137 7982 39.9 907 894 177.6
B 6 159 1672170 10565.99 872 854 158.2
B 10 245 1372709 8672.81 872 854 158.2
B 5 172 296821 1871.09 872 854 158.2
C 0 10 320325 1607.53 875 884 198.7
C 14 238 153347 767.24 875 884 198.7
C 4 175 22443 108.49 875 884 198.7
D 8 195 1075186 5210.64 879 856 206.2
D 12 227 167350 807.52 879 856 206.2
D 2 250 58207 278.16 879 856 206.2

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