ASTROSAT CZTI

Data Quality Report

Orbit 37703

Creation date: 2024-06-27T21:43:20.502023
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_075T01_9000005342_37703cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37703cztM0_level2_quad_clean.evt
Size (bytes)466,997,76065,707,200
Size445.4 MB 62.7 MB
Events in quadrant A3,327,239397,484
Events in quadrant B2,812,991408,394
Events in quadrant C2,992,206405,986
Events in quadrant D4,631,112386,256

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133353
B0119532
C0121532
D0174852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5595380.679178%
B5595260.464701%
C5595571.018767%
D55952955.272565%

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 7118 5595 29 29 0.41% 0.52%
B 7117 5594 17 17 0.24% 0.30%
C 7117 5594 53 53 0.74% 0.95%
D 7117 5594 336 336 4.72% 6.01%

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 15 222 408226 3164.77 637 623 128.8
A 10 83 322652 2500.34 637 623 128.8
A 9 143 76066 585.76 637 623 128.8
B 5 172 109070 893.13 634 617 121.4
B 0 189 54725 445.59 634 617 121.4
B 10 245 33262 268.84 634 617 121.4
C 15 214 255817 1753.33 621 624 145.5
C 14 254 211085 1445.99 621 624 145.5
C 0 10 103444 706.43 621 624 145.5
D 12 227 1230533 8226.59 612 596 149.5
D 12 217 296325 1978.02 612 596 149.5
D 2 250 258313 1723.77 612 596 149.5

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