ASTROSAT CZTI

Data Quality Report

Orbit 17718

Creation date: 2024-06-27T17:39:59.455091
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_042T01_9000002630_17718cztM0_level2.evt modeM0/AS1T03_042T01_9000002630_17718cztM0_level2_quad_clean.evt
Size (bytes)585,118,08092,096,640
Size558.0 MB 87.8 MB
Events in quadrant A3,079,868601,897
Events in quadrant B3,194,093619,676
Events in quadrant C3,279,310584,823
Events in quadrant D7,720,148522,835

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135501
B0137331
C0138831
D0277051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6581350.531834%
B6581590.896520%
C6582741.124278%
D6582163224.794895%

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 7756 6582 3 3 0.04% 0.05%
B 7756 6582 0 0 0.00% 0.00%
C 7757 6583 0 0 0.00% 0.00%
D 7757 6582 1405 1405 18.11% 21.35%

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 19249 114.36 796 780 161.5
A 0 226 6817 37.38 796 780 161.5
A 12 194 5927 31.87 796 780 161.5
B 0 189 37859 248.32 797 776 149.3
B 0 219 20044 129.02 797 776 149.3
B 12 111 17797 113.98 797 776 149.3
C 3 233 178835 1011.84 759 763 176.0
C 14 238 119940 677.19 759 763 176.0
C 5 218 21796 119.51 759 763 176.0
D 7 238 5045254 29280.55 674 656 172.3
D 1 52 37090 211.48 674 656 172.3
D 7 223 33220 189.01 674 656 172.3

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