ASTROSAT CZTI

Data Quality Report

Orbit 20440

Creation date: 2024-06-27T18:15:27.549742
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_188T01_9000003018_20440cztM0_level2.evt modeM0/AS1A05_188T01_9000003018_20440cztM0_level2_quad_clean.evt
Size (bytes)365,143,68078,785,280
Size348.2 MB 75.1 MB
Events in quadrant A2,545,045515,181
Events in quadrant B2,909,682517,923
Events in quadrant C2,632,025501,741
Events in quadrant D2,624,412493,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105331
B0115781
C0106421
D0109771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5100230.450980%
B5100681.333333%
C5100611.196078%
D5100410.803922%

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 5100 5100 0 0 0.00% 0.00%
B 5099 5099 5 5 0.10% 0.10%
C 5100 5100 0 0 0.00% 0.00%
D 5100 5100 24 24 0.47% 0.47%

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 5731 39.26 658 646 129.5
A 10 253 5585 38.13 658 646 129.5
A 3 137 5110 34.47 658 646 129.5
B 10 245 262975 2136.26 653 639 122.8
B 0 198 57710 464.74 653 639 122.8
B 12 111 14375 111.86 653 639 122.8
C 14 238 101380 688.13 634 639 146.4
C 3 233 26628 177.52 634 639 146.4
C 3 247 18297 120.62 634 639 146.4
D 13 153 178791 1151.35 642 625 154.7
D 2 234 23609 148.53 642 625 154.7
D 2 120 13155 80.97 642 625 154.7

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