ASTROSAT CZTI

Data Quality Report

Orbit 33178

Creation date: 2024-06-27T20:45:46.098367
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/AS1A11_080T02_9000004768_33178cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33178cztM0_level2_quad_clean.evt
Size (bytes)511,758,72051,261,120
Size488.1 MB 48.9 MB
Events in quadrant A2,650,680302,977
Events in quadrant B4,162,230297,627
Events in quadrant C2,868,815302,000
Events in quadrant D5,465,407285,556

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107443
B0156912
C0113922
D0199842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519670.134719%
B519653010.200154%
C5196721.385681%
D51964278.217860%

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 7350 5197 0 0 0.00% 0.00%
B 7349 5196 354 354 4.82% 6.81%
C 7350 5197 61 61 0.83% 1.17%
D 7350 5197 348 348 4.73% 6.70%

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 13 6 15808 111.72 681 668 135.5
A 13 254 10240 70.63 681 668 135.5
A 3 137 5876 38.43 681 668 135.5
B 5 172 1216408 10184.85 640 624 119.4
B 0 219 123543 1029.71 640 624 119.4
B 0 229 107902 898.68 640 624 119.4
C 0 10 191461 1270.89 660 668 150.1
C 14 67 67078 442.36 660 668 150.1
C 1 241 13755 87.17 660 668 150.1
D 8 195 950167 5926.03 648 634 160.2
D 12 218 713469 4448.8 648 634 160.2
D 7 223 321308 2001.32 648 634 160.2

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