ASTROSAT CZTI

Data Quality Report

Orbit 36484

Creation date: 2022-06-28T05:30:39.822696
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_049T04_9000005210_36484cztM0_level2.evt modeM0/AS1A11_049T04_9000005210_36484cztM0_level2_quad_clean.evt
Size (bytes)449,521,92070,269,120
Size428.7 MB 67.0 MB
Events in quadrant A2,843,350441,198
Events in quadrant B3,840,131429,257
Events in quadrant C2,980,155430,354
Events in quadrant D3,546,812412,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122873
B0154412
C0125342
D0147812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594590.151388%
B59452985.012616%
C5945230.386880%
D59451973.313709%

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 7259 5946 1 1 0.01% 0.02%
B 7259 5946 179 179 2.47% 3.01%
C 7259 5946 13 13 0.18% 0.22%
D 7259 5946 135 135 1.86% 2.27%

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 10 83 203780 1469.29 674 659 138.2
A 9 143 27193 191.94 674 659 138.2
A 13 254 9600 64.68 674 659 138.2
B 5 172 703800 5556.51 654 636 126.5
B 5 255 315126 2485.15 654 636 126.5
B 4 171 112230 881.83 654 636 126.5
C 15 214 257862 1698.79 647 652 151.4
C 0 10 179000 1177.93 647 652 151.4
C 8 79 16223 102.84 647 652 151.4
D 13 249 541946 3447.55 642 625 157.0
D 10 118 100004 632.92 642 625 157.0
D 2 250 68948 435.13 642 625 157.0

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