ASTROSAT CZTI

Data Quality Report

Orbit 17661

Creation date: 2024-06-27T17:39:15.224755
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_118T02_9000002612_17661cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17661cztM0_level2_quad_clean.evt
Size (bytes)312,122,88051,543,360
Size297.7 MB 49.2 MB
Events in quadrant A2,142,994315,942
Events in quadrant B2,263,302319,749
Events in quadrant C2,292,147304,672
Events in quadrant D2,444,068300,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091831
B094741
C093781
D0101781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A454380.176095%
B4543200.440238%
C4543250.550297%
D4543330.726392%

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 4543 4543 0 0 0.00% 0.00%
B 4543 4543 10 10 0.22% 0.22%
C 4543 4543 0 0 0.00% 0.00%
D 4543 4543 22 22 0.48% 0.48%

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 14 237 17285 148.53 553 543 112.7
A 0 226 4937 38.98 553 543 112.7
A 12 194 4121 31.74 553 543 112.7
B 7 220 56741 537.8 545 532 104.5
B 0 230 32198 302.98 545 532 104.5
B 0 189 13169 120.91 545 532 104.5
C 3 233 156532 1260.46 526 530 123.8
C 14 238 81966 657.98 526 530 123.8
C 13 61 3854 26.86 526 530 123.8
D 1 52 189452 1427.83 536 520 132.3
D 13 189 154951 1167.1 536 520 132.3
D 10 70 27143 201.2 536 520 132.3

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