ASTROSAT CZTI

Data Quality Report

Orbit 32718

Creation date: 2024-06-27T20:41:12.551619
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_123T04_9000004726_32718cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32718cztM0_level2_quad_clean.evt
Size (bytes)565,087,68061,044,480
Size538.9 MB 58.2 MB
Events in quadrant A5,709,714332,085
Events in quadrant B3,531,352382,091
Events in quadrant C3,217,907378,079
Events in quadrant D4,269,073357,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206714
B0141411
C0132721
D0165065

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5694103518.177028%
B56951823.195786%
C5695981.720808%
D56942454.302775%

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 7127 5696 791 791 11.10% 13.89%
B 7127 5696 107 107 1.50% 1.88%
C 7127 5696 91 91 1.28% 1.60%
D 7127 5696 202 202 2.83% 3.55%

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 15 249 3183470 25908.83 610 597 122.8
A 15 237 87403 706.61 610 597 122.8
A 9 143 64933 523.7 610 597 122.8
B 4 251 462316 3648.16 659 644 126.5
B 3 26 222848 1755.87 659 644 126.5
B 0 219 61650 482.07 659 644 126.5
C 0 10 529105 3586.96 641 646 147.3
C 3 233 107099 722.56 641 646 147.3
C 8 35 37298 248.78 641 646 147.3
D 2 249 627988 4100.96 635 620 153.0
D 2 250 329948 2152.74 635 620 153.0
D 8 195 276330 1802.25 635 620 153.0

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