ASTROSAT CZTI

Data Quality Report

Orbit 27561

Creation date: 2024-06-27T19:41:31.779129
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/AS1C05_019T04_9000003956_27561cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27561cztM0_level2_quad_clean.evt
Size (bytes)451,169,280120,974,400
Size430.3 MB 115.4 MB
Events in quadrant A2,839,163837,663
Events in quadrant B3,190,603851,403
Events in quadrant C2,845,632803,695
Events in quadrant D4,394,262765,725

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119940
B0130600
C0121080
D0170040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5807390.671603%
B58081272.186639%
C5808450.774793%
D58082584.442149%

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 7152 5807 1 1 0.01% 0.02%
B 7152 5807 47 47 0.66% 0.81%
C 7152 5807 5 5 0.07% 0.09%
D 7152 5807 185 185 2.59% 3.19%

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 15 174 15674 102.82 730 717 145.5
A 13 254 9502 60.39 730 717 145.5
A 3 137 6578 40.29 730 717 145.5
B 10 245 190133 1400.62 722 705 135.2
B 3 64 132182 972.13 722 705 135.2
B 15 32 38187 277.14 722 705 135.2
C 14 238 113824 704.78 688 691 160.5
C 2 16 37326 228.22 688 691 160.5
C 7 221 6378 35.43 688 691 160.5
D 1 52 985453 6181.64 683 665 159.3
D 7 80 423846 2656.36 683 665 159.3
D 12 227 251822 1576.54 683 665 159.3

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