ASTROSAT CZTI

Data Quality Report

Orbit 12664

Creation date: 2024-06-27T16:30:44.584304
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/AS1A04_174T01_9000001876_12664cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12664cztM0_level2_quad_clean.evt
Size (bytes)459,518,40093,401,280
Size438.2 MB 89.1 MB
Events in quadrant A2,953,758637,785
Events in quadrant B4,828,079567,687
Events in quadrant C2,853,280621,639
Events in quadrant D2,890,843599,549

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123162
B0180771
C0120231
D0123421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745751.305483%
B574576213.263708%
C5745530.922541%
D5745751.305483%

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 7036 5746 0 0 0.00% 0.00%
B 7036 5746 605 605 8.60% 10.53%
C 7036 5746 5 5 0.07% 0.09%
D 7036 5746 15 15 0.21% 0.26%

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 8 15 66505 434.93 744 731 151.2
A 12 189 25047 160.79 744 731 151.2
A 0 226 6968 41.24 744 731 151.2
B 4 239 1801816 13816.55 691 677 130.4
B 11 51 102520 781.24 691 677 130.4
B 3 209 77709 590.91 691 677 130.4
C 15 208 46629 280.07 715 724 163.9
C 14 234 16445 95.91 715 724 163.9
C 13 61 5373 28.36 715 724 163.9
D 13 249 46330 245.84 713 700 185.6
D 1 52 37527 198.42 713 700 185.6
D 13 104 27166 142.59 713 700 185.6

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