ASTROSAT CZTI

Data Quality Report

Orbit 15341

Creation date: 2024-06-27T17:07:07.990795
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/AS1T02_073T01_9000002260_15341cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15341cztM0_level2_quad_clean.evt
Size (bytes)485,424,000100,033,920
Size462.9 MB 95.4 MB
Events in quadrant A3,435,097650,792
Events in quadrant B3,663,031657,636
Events in quadrant C3,606,315642,880
Events in quadrant D3,549,008618,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145343
B0151272
C0148292
D0148482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65891562.367582%
B65891592.413113%
C65891342.033693%
D65891412.139930%

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 8950 6590 1 1 0.01% 0.02%
B 8950 6590 1 1 0.01% 0.02%
C 8950 6590 0 0 0.00% 0.00%
D 8950 6590 4 4 0.04% 0.06%

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 0 226 8014 39.72 892 876 179.7
A 12 194 6732 32.59 892 876 179.7
A 3 137 5941 28.18 892 876 179.7
B 10 245 170594 1023.25 882 863 165.9
B 3 64 26717 155.87 882 863 165.9
B 12 111 19571 112.78 882 863 165.9
C 3 233 199788 1000.99 873 878 198.7
C 13 61 6143 26.5 873 878 198.7
C 7 247 4311 17.28 873 878 198.7
D 1 255 179057 848.18 872 849 210.1
D 2 234 22604 103.54 872 849 210.1
D 13 104 18633 84.64 872 849 210.1

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