ASTROSAT CZTI

Data Quality Report

Orbit 47490

Creation date: 2024-07-10T00:51:30.539309
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/AS1A13_089T01_9000006330_47490cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47490cztM0_level2_quad_clean.evt
Size (bytes)495,313,920108,253,440
Size472.4 MB 103.2 MB
Events in quadrant A7,102,317708,841
Events in quadrant B3,430,439762,686
Events in quadrant C3,032,619725,825
Events in quadrant D4,279,731639,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254692
B0144102
C0134032
D0171272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63163595.683977%
B63171031.630521%
C6317470.744024%
D63163515.557315%

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 7531 6317 146 146 1.94% 2.31%
B 7532 6318 25 25 0.33% 0.40%
C 7532 6318 15 15 0.20% 0.24%
D 7531 6317 260 260 3.45% 4.12%

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 10 83 4044624 26449.28 730 715 152.9
A 9 191 149529 973.32 730 715 152.9
A 15 235 75380 488.35 730 715 152.9
B 0 200 163853 1139.28 739 716 143.2
B 0 186 85954 595.27 739 716 143.2
B 0 183 54204 373.54 739 716 143.2
C 12 2 102174 587.39 731 735 172.7
C 3 233 54279 310.05 731 735 172.7
C 0 207 19953 111.28 731 735 172.7
D 7 38 738933 4105.61 714 692 179.8
D 2 165 269706 1496.08 714 692 179.8
D 13 23 233313 1293.68 714 692 179.8

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