ASTROSAT CZTI

Data Quality Report

Orbit 18178

Creation date: 2024-06-27T17:46:15.101572
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_063T02_9000002708_18178cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18178cztM0_level2_quad_clean.evt
Size (bytes)439,341,12077,647,680
Size419.0 MB 74.1 MB
Events in quadrant A2,876,519502,546
Events in quadrant B3,006,151503,156
Events in quadrant C2,914,290483,617
Events in quadrant D4,133,945475,965

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118161
B0121241
C0118591
D0159871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5518400.724900%
B5518751.359188%
C5517530.960667%
D55171673.027007%

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 6783 5519 0 0 0.00% 0.00%
B 6783 5519 15 15 0.22% 0.27%
C 6782 5518 1 1 0.01% 0.02%
D 6782 5518 138 138 2.03% 2.50%

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 46144 311.68 735 723 145.7
A 0 226 6609 40.39 735 723 145.7
A 4 2 6347 38.59 735 723 145.7
B 7 220 71903 523.32 720 705 136.1
B 10 247 51353 372.27 720 705 136.1
B 0 189 23547 167.89 720 705 136.1
C 14 238 109305 672.74 693 698 161.4
C 4 254 92591 569.21 693 698 161.4
C 3 233 12343 72.13 693 698 161.4
D 7 238 1298392 7510.66 708 689 172.8
D 10 70 50892 290.56 708 689 172.8
D 13 104 42821 243.85 708 689 172.8

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