ASTROSAT CZTI

Data Quality Report

Orbit 24254

Creation date: 2024-06-27T19:03:59.827293
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_118T01_9000003586_24254cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24254cztM0_level2_quad_clean.evt
Size (bytes)503,369,28076,204,800
Size480.1 MB 72.7 MB
Events in quadrant A3,338,183466,785
Events in quadrant B3,623,703470,208
Events in quadrant C3,428,760450,858
Events in quadrant D4,388,160441,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142392
B0151422
C0144332
D0175812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6860550.801749%
B6860901.311953%
C68601011.472303%
D68601782.594752%

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 7765 6860 0 0 0.00% 0.00%
B 7765 6860 9 9 0.12% 0.13%
C 7765 6860 4 4 0.05% 0.06%
D 7765 6860 82 82 1.06% 1.20%

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 3 1 16865 92.15 861 840 173.9
A 13 254 10799 57.27 861 840 173.9
A 3 137 7643 39.12 861 840 173.9
B 15 33 114287 690.15 856 835 164.4
B 0 229 54907 328.93 856 835 164.4
B 0 190 45903 274.16 856 835 164.4
C 14 238 131397 673.27 824 830 193.9
C 2 16 62422 317.6 824 830 193.9
C 7 247 15796 77.17 824 830 193.9
D 8 195 506314 2474.43 835 809 204.3
D 1 52 411481 2010.22 835 809 204.3
D 7 238 178884 871.67 835 809 204.3

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