ASTROSAT CZTI

Data Quality Report

Orbit 20842

Creation date: 2024-06-27T18:20:15.225529
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/AS1C04_001T01_9000003074_20842cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20842cztM0_level2_quad_clean.evt
Size (bytes)460,391,04096,048,000
Size439.1 MB 91.6 MB
Events in quadrant A3,104,082649,526
Events in quadrant B3,343,087645,945
Events in quadrant C2,961,905610,175
Events in quadrant D4,129,307586,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127891
B0136621
C0124931
D0160481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5961370.620701%
B5962741.241194%
C5962520.872191%
D59623295.518282%

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 7285 5960 0 0 0.00% 0.00%
B 7287 5962 23 23 0.32% 0.39%
C 7287 5962 0 0 0.00% 0.00%
D 7287 5962 284 284 3.90% 4.76%

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 39138 245.71 784 770 156.2
A 2 79 25431 157.93 784 770 156.2
A 6 16 15477 94.18 784 770 156.2
B 7 220 128866 900.68 771 754 142.2
B 0 189 117031 817.47 771 754 142.2
B 0 190 16875 113.34 771 754 142.2
C 14 238 119189 709.89 728 734 166.9
C 13 61 5099 26.16 728 734 166.9
C 7 220 2463 10.36 728 734 166.9
D 1 52 1069817 6103.28 730 708 175.2
D 13 153 234839 1336.6 730 708 175.2
D 9 1 38526 215.89 730 708 175.2

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