ASTROSAT CZTI

Data Quality Report

Orbit 20507

Creation date: 2024-06-27T18:16:08.499765
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/AS1A05_115T01_9000003030_20507cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20507cztM0_level2_quad_clean.evt
Size (bytes)585,420,48081,374,400
Size558.3 MB 77.6 MB
Events in quadrant A2,999,426547,583
Events in quadrant B3,271,656551,275
Events in quadrant C2,853,596526,940
Events in quadrant D8,197,544417,920

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129811
B0136761
C0123921
D0285251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013530.881424%
B6013340.565442%
C6013400.665225%
D6013164927.423915%

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 7143 6013 21 21 0.29% 0.35%
B 7143 6013 11 11 0.15% 0.18%
C 7143 6013 0 0 0.00% 0.00%
D 7142 6012 1540 1540 21.56% 25.62%

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 5 16 197992 1338.6 724 708 147.4
A 13 254 9149 57.27 724 708 147.4
A 12 194 6405 38.65 724 708 147.4
B 0 197 147762 1067.95 727 710 137.7
B 0 190 80054 576.23 727 710 137.7
B 0 189 71773 516.09 727 710 137.7
C 14 238 108151 655.7 699 703 163.9
C 0 207 7246 39.93 699 703 163.9
C 8 208 7004 38.45 699 703 163.9
D 2 16 3762236 24688.0 626 608 152.4
D 1 52 1185069 7773.76 626 608 152.4
D 13 153 378350 2479.16 626 608 152.4

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