ASTROSAT CZTI

Data Quality Report

Orbit 20541

Creation date: 2024-06-27T18:16:35.682398
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_022T08_9000003036_20541cztM0_level2.evt modeM0/AS1A05_022T08_9000003036_20541cztM0_level2_quad_clean.evt
Size (bytes)455,584,32083,629,440
Size434.5 MB 79.8 MB
Events in quadrant A3,085,838542,027
Events in quadrant B3,245,822547,289
Events in quadrant C3,310,707509,530
Events in quadrant D3,727,216493,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131222
B0134412
C0137962
D0153212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6298150.238171%
B6298250.396951%
C6298440.698634%
D6298871.381391%

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 7548 6299 0 0 0.00% 0.00%
B 7548 6299 2 2 0.03% 0.03%
C 7548 6299 0 0 0.00% 0.00%
D 7548 6299 90 90 1.19% 1.43%

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 0 226 6840 37.61 800 785 161.0
A 3 137 6396 34.85 800 785 161.0
A 12 194 5529 29.46 800 785 161.0
B 7 220 43691 284.44 799 782 150.9
B 0 189 18275 115.96 799 782 150.9
B 12 111 17800 112.81 799 782 150.9
C 8 208 182865 1029.42 757 763 176.9
C 14 238 119250 669.8 757 763 176.9
C 9 221 56790 316.72 757 763 176.9
D 7 238 491366 2656.18 759 740 184.7
D 1 52 81037 434.72 759 740 184.7
D 13 153 77354 414.78 759 740 184.7

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