ASTROSAT CZTI

Data Quality Report

Orbit 15647

Creation date: 2024-06-27T17:11:35.224035
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_086T01_9000002316_15647cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15647cztM0_level2_quad_clean.evt
Size (bytes)456,511,68074,583,360
Size435.4 MB 71.1 MB
Events in quadrant A3,295,299455,179
Events in quadrant B3,314,056464,141
Events in quadrant C3,345,502459,116
Events in quadrant D3,449,377447,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134453
B0134052
C0137022
D0139592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6201691.112724%
B62011001.612643%
C62011332.144815%
D62011221.967425%

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 7547 6202 0 0 0.00% 0.00%
B 7547 6202 0 0 0.00% 0.00%
C 7547 6202 0 0 0.00% 0.00%
D 7547 6202 60 60 0.80% 0.97%

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 15 157 68752 408.63 834 819 166.2
A 15 249 18633 107.16 834 819 166.2
A 0 226 7410 39.65 834 819 166.2
B 0 189 38552 247.13 832 814 152.7
B 12 111 17131 106.85 832 814 152.7
B 11 111 14604 90.3 832 814 152.7
C 14 238 128789 695.39 813 822 184.0
C 3 233 36893 196.01 813 822 184.0
C 10 187 6117 28.77 813 822 184.0
D 1 52 204009 1036.14 819 795 196.1
D 10 70 64595 325.3 819 795 196.1
D 4 95 60492 304.38 819 795 196.1

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