ASTROSAT CZTI

Data Quality Report

Orbit 28538

Creation date: 2024-06-27T19:53:01.539154
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/AS1A10_058T09_9000004100_28538cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28538cztM0_level2_quad_clean.evt
Size (bytes)1,058,034,240145,411,200
Size1009.0 MB 138.7 MB
Events in quadrant A7,005,523896,982
Events in quadrant B6,347,289914,815
Events in quadrant C6,195,624877,616
Events in quadrant D11,623,488822,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291173
B0268183
C0263903
D0430303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128932612.024354%
B128931341.039324%
C128941771.372732%
D1289410358.026989%

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 14628 12893 117 117 0.80% 0.91%
B 14628 12893 6 6 0.04% 0.05%
C 14629 12894 0 0 0.00% 0.00%
D 14629 12894 847 847 5.79% 6.57%

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 926793 2961.37 1558 1526 312.4
A 14 238 26164 78.86 1558 1526 312.4
A 13 254 25406 76.43 1558 1526 312.4
B 0 230 82499 271.5 1556 1517 298.3
B 10 245 65272 213.74 1556 1517 298.3
B 12 111 38162 122.86 1556 1517 298.3
C 14 238 240007 674.15 1500 1505 353.8
C 3 233 48070 131.62 1500 1505 353.8
C 7 247 44242 120.8 1500 1505 353.8
D 1 52 4876026 13751.77 1475 1436 354.5
D 8 195 960562 2705.8 1475 1436 354.5
D 13 104 77485 214.54 1475 1436 354.5

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