ASTROSAT CZTI

Data Quality Report

Orbit 04428

Creation date: 2024-06-27T14:41:50.412236
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/AS1G05_230T04_9000000550_04428cztM0_level2.evt modeM0/AS1G05_230T04_9000000550_04428cztM0_level2_quad_clean.evt
Size (bytes)542,615,04072,218,880
Size517.5 MB 68.9 MB
Events in quadrant A3,448,149445,341
Events in quadrant B5,714,503425,721
Events in quadrant C3,585,397457,199
Events in quadrant D3,283,530444,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140462
B0208151
C0145201
D0137001

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59232293.866284%
B5923110018.571670%
C5923701.181834%
D59231272.144184%

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 7149 5924 70 70 0.98% 1.18%
B 7149 5924 882 882 12.34% 14.89%
C 7149 5924 1 1 0.01% 0.02%
D 7149 5924 66 66 0.92% 1.11%

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 0 13 682751 4776.91 709 695 142.8
A 8 15 31685 217.04 709 695 142.8
A 13 14 7277 46.1 709 695 142.8
B 10 16 1554456 12323.39 673 659 126.1
B 14 167 1494166 11845.22 673 659 126.1
B 4 170 25569 197.56 673 659 126.1
C 14 48 782815 4872.28 706 709 160.5
C 9 247 22040 132.89 706 709 160.5
C 9 16 19566 117.47 706 709 160.5
D 13 239 203601 1221.97 701 682 166.1
D 13 114 201984 1212.24 701 682 166.1
D 13 53 63447 377.97 701 682 166.1

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