ASTROSAT CZTI

Data Quality Report

Orbit 34388

Creation date: 2022-02-06T16:20:13.960923
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_085T01_9000004910_34388cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34388cztM0_level2_quad_clean.evt
Size (bytes)638,098,56076,320,000
Size608.5 MB 72.8 MB
Events in quadrant A2,597,406523,468
Events in quadrant B3,046,969527,198
Events in quadrant C2,936,952529,041
Events in quadrant D10,364,865339,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113703
B0126772
C0121282
D0345952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A557960.107546%
B55791342.401864%
C5579270.483958%
D5579342461.373006%

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 7192 5580 0 0 0.00% 0.00%
B 7192 5580 70 70 0.97% 1.25%
C 7192 5580 13 13 0.18% 0.23%
D 7192 5580 3155 3155 43.87% 56.54%

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 33580 250.56 657 645 131.4
A 13 254 9747 69.24 657 645 131.4
A 9 143 8502 59.77 657 645 131.4
B 5 172 441657 3505.91 649 632 125.8
B 5 255 44645 349.88 649 632 125.8
B 12 111 15438 117.7 649 632 125.8
C 15 214 237761 1595.0 637 641 148.7
C 4 254 86471 577.34 637 641 148.7
C 0 10 68695 457.77 637 641 148.7
D 7 223 7317522 63224.48 476 463 115.7
D 8 195 835544 7215.68 476 463 115.7
D 12 235 95204 818.63 476 463 115.7

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