ASTROSAT CZTI

Data Quality Report

Orbit 17934

Creation date: 2024-06-27T17:42:48.045806
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/AS1T03_025T01_9000002670_17934cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17934cztM0_level2_quad_clean.evt
Size (bytes)455,630,400124,562,880
Size434.5 MB 118.8 MB
Events in quadrant A3,339,619837,322
Events in quadrant B3,378,681868,986
Events in quadrant C3,299,354834,216
Events in quadrant D3,368,683808,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139742
B0140882
C0137062
D0141752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60681772.916941%
B6069861.417037%
C60691322.174988%
D6069661.087494%

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 7453 6069 71 71 0.95% 1.17%
B 7454 6070 19 19 0.25% 0.31%
C 7454 6070 29 29 0.39% 0.48%
D 7454 6070 23 23 0.31% 0.38%

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 15 174 362041 2344.0 773 757 154.1
A 0 226 6790 39.14 773 757 154.1
A 12 194 5693 32.02 773 757 154.1
B 15 222 158365 1080.39 789 770 145.9
B 0 197 70154 475.66 789 770 145.9
B 7 220 18736 123.16 789 770 145.9
C 14 238 121731 686.82 767 774 176.1
C 9 160 66515 373.29 767 774 176.1
C 9 176 49020 273.95 767 774 176.1
D 7 238 136224 740.3 773 754 183.0
D 10 70 59313 320.0 773 754 183.0
D 15 0 47961 257.97 773 754 183.0

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