ASTROSAT CZTI

Data Quality Report

Orbit 19307

Creation date: 2024-06-27T18:01:12.190174
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_204T01_9000002856_19307cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19307cztM0_level2_quad_clean.evt
Size (bytes)515,021,760106,176,960
Size491.2 MB 101.3 MB
Events in quadrant A3,328,656721,737
Events in quadrant B3,413,456720,260
Events in quadrant C3,393,988679,261
Events in quadrant D5,034,293654,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140791
B0141851
C0140581
D0191551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289961.526475%
B62901021.621622%
C62901201.907790%
D62904747.535771%

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 7509 6289 2 2 0.03% 0.03%
B 7510 6290 1 1 0.01% 0.02%
C 7510 6290 4 4 0.05% 0.06%
D 7510 6290 313 313 4.17% 4.98%

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 4 2 21826 123.43 859 842 170.0
A 0 226 7677 40.2 859 842 170.0
A 13 254 6432 32.88 859 842 170.0
B 0 229 43921 274.11 839 819 157.2
B 15 19 33141 205.55 839 819 157.2
B 12 111 18291 111.11 839 819 157.2
C 14 238 127067 675.81 809 816 186.8
C 0 79 89254 473.4 809 816 186.8
C 3 233 9095 44.32 809 816 186.8
D 7 238 1280900 6458.02 811 789 198.2
D 10 66 313567 1577.93 811 789 198.2
D 11 176 290090 1459.49 811 789 198.2

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