ASTROSAT CZTI

Data Quality Report

Orbit 23489

Creation date: 2024-06-27T18:55:06.837305
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/AS1A07_100T02_9000003476_23489cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23489cztM0_level2_quad_clean.evt
Size (bytes)535,253,76097,680,960
Size510.5 MB 93.2 MB
Events in quadrant A2,906,903650,041
Events in quadrant B3,480,302670,404
Events in quadrant C4,713,476618,982
Events in quadrant D4,685,599582,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127190
B0145450
C0180030
D0179400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244200.320307%
B6244851.361307%
C62446019.625240%
D62445468.744395%

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 7339 6245 1 1 0.01% 0.02%
B 7339 6244 31 31 0.42% 0.50%
C 7339 6244 457 457 6.23% 7.32%
D 7339 6245 532 532 7.25% 8.52%

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 13 254 10955 67.29 752 735 151.9
A 0 226 6446 37.6 752 735 151.9
A 3 137 6328 36.83 752 735 151.9
B 0 189 322082 2263.23 759 740 142.0
B 5 172 82544 576.15 759 740 142.0
B 0 230 42993 297.59 759 740 142.0
C 2 16 1787220 10747.09 712 717 166.2
C 14 238 111027 663.59 712 717 166.2
C 7 247 25714 150.37 712 717 166.2
D 1 52 1831600 10611.39 714 694 172.5
D 7 238 32426 183.91 714 694 172.5
D 13 174 31536 178.75 714 694 172.5

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