ASTROSAT CZTI

Data Quality Report

Orbit 20658

Creation date: 2024-06-27T18:18:04.820388
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/AS1A05_103T06_9000003056_20658cztM0_level2.evt modeM0/AS1A05_103T06_9000003056_20658cztM0_level2_quad_clean.evt
Size (bytes)147,064,32042,511,680
Size140.3 MB 40.5 MB
Events in quadrant A1,012,880290,758
Events in quadrant B1,045,578291,941
Events in quadrant C984,242278,088
Events in quadrant D1,264,031272,130

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043931
B044761
C043691
D052001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A213080.375587%
B213040.187793%
C213090.422535%
D2130160.751174%

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 2130 2130 0 0 0.00% 0.00%
B 2130 2130 0 0 0.00% 0.00%
C 2130 2130 1 1 0.05% 0.05%
D 2130 2130 15 15 0.70% 0.70%

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 13 210 6994 125.98 258 254 53.5
A 15 174 6185 110.86 258 254 53.5
A 5 16 4309 75.8 258 254 53.5
B 0 190 9497 183.29 256 250 50.4
B 6 36 8779 169.06 256 250 50.4
B 0 228 7973 153.08 256 250 50.4
C 14 238 38082 662.11 240 241 57.2
C 7 247 3889 63.83 240 241 57.2
C 0 207 3511 57.22 240 241 57.2
D 1 239 147537 2371.9 245 237 62.1
D 2 165 69269 1111.59 245 237 62.1
D 1 20 45141 723.07 245 237 62.1

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