ASTROSAT CZTI

Data Quality Report

Orbit 21885

Creation date: 2024-06-27T18:33:28.111344
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/AS1A07_041T01_9000003234_21885cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21885cztM0_level2_quad_clean.evt
Size (bytes)492,733,44093,009,600
Size469.9 MB 88.7 MB
Events in quadrant A3,016,309628,908
Events in quadrant B3,217,632639,632
Events in quadrant C2,960,729598,087
Events in quadrant D5,325,105535,138

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127061
B0132831
C0125231
D0198461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5932390.657451%
B5933631.061857%
C5933701.179842%
D59335278.882521%

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 7287 5932 2 2 0.03% 0.03%
B 7288 5934 11 11 0.15% 0.19%
C 7288 5934 0 0 0.00% 0.00%
D 7288 5933 494 494 6.78% 8.33%

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 4 2 16525 102.12 775 762 154.4
A 13 254 11841 71.78 775 762 154.4
A 5 16 7229 41.9 775 762 154.4
B 0 197 63648 439.62 772 757 143.1
B 3 64 54248 373.92 772 757 143.1
B 0 190 23728 160.57 772 757 143.1
C 14 238 123107 729.97 726 732 167.6
C 13 61 5159 26.41 726 732 167.6
C 14 219 4200 20.69 726 732 167.6
D 1 52 1990254 11637.1 705 685 171.0
D 7 238 464550 2713.17 705 685 171.0
D 13 174 63399 366.82 705 685 171.0

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