ASTROSAT CZTI

Data Quality Report

Orbit 11452

Creation date: 2024-06-27T16:13:08.244846
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/AS1A04_021T03_9000001678_11452cztM0_level2.evt modeM0/AS1A04_021T03_9000001678_11452cztM0_level2_quad_clean.evt
Size (bytes)591,171,840103,199,040
Size563.8 MB 98.4 MB
Events in quadrant A3,657,800648,652
Events in quadrant B5,296,699629,879
Events in quadrant C3,381,467694,410
Events in quadrant D5,075,612646,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158243
B0205392
C0150942
D0199712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7269951.306920%
B72695447.483835%
C7269510.701610%
D72695958.185445%

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 8790 7272 5 5 0.06% 0.07%
B 8790 7272 250 250 2.84% 3.44%
C 8790 7272 0 0 0.00% 0.00%
D 8790 7272 404 404 4.60% 5.56%

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 99583 553.77 869 846 178.3
A 1 162 70036 388.06 869 846 178.3
A 1 178 41323 227.02 869 846 178.3
B 4 239 1511972 9255.18 852 831 163.3
B 11 51 188581 1149.9 852 831 163.3
B 15 85 100881 612.77 852 831 163.3
C 13 61 6228 26.28 866 870 203.9
C 14 234 3134 11.1 866 870 203.9
C 3 202 2113 6.1 866 870 203.9
D 10 253 1148340 5791.34 821 799 198.1
D 1 52 289980 1459.42 821 799 198.1
D 13 104 113754 570.05 821 799 198.1

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