ASTROSAT CZTI

Data Quality Report

Orbit 25438

Creation date: 2024-06-27T19:17:40.749401
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/AS1A09_085T02_9000003716_25438cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25438cztM0_level2_quad_clean.evt
Size (bytes)637,488,000101,494,080
Size608.0 MB 96.8 MB
Events in quadrant A3,514,871661,535
Events in quadrant B3,524,337661,910
Events in quadrant C3,462,773636,458
Events in quadrant D8,303,557599,450

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150410
B0151470
C0150840
D0295370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7386200.270783%
B7387440.595641%
C7387700.947611%
D7387171523.216461%

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 7791 7387 0 0 0.00% 0.00%
B 7792 7387 0 0 0.00% 0.00%
C 7792 7388 0 0 0.00% 0.00%
D 7791 7387 1634 1634 20.97% 22.12%

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 6 16 66506 362.72 894 876 180.9
A 13 254 11601 59.27 894 876 180.9
A 3 137 8436 41.78 894 876 180.9
B 0 230 22552 128.42 882 861 168.9
B 12 111 20977 119.1 882 861 168.9
B 11 111 18665 105.41 882 861 168.9
C 14 238 135990 681.01 846 850 198.4
C 9 54 25217 122.79 846 850 198.4
C 13 61 5968 25.79 846 850 198.4
D 7 238 4544873 25404.01 740 718 178.9
D 8 195 465745 2599.72 740 718 178.9
D 2 82 189756 1056.81 740 718 178.9

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