ASTROSAT CZTI

Data Quality Report

Orbit 38017

Creation date: 2024-06-27T21:47:22.211072
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_082T01_9000005356_38017cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38017cztM0_level2_quad_clean.evt
Size (bytes)338,204,16096,595,200
Size322.5 MB 92.1 MB
Events in quadrant A2,947,227645,323
Events in quadrant B3,174,769655,051
Events in quadrant C2,776,678647,825
Events in quadrant D3,186,594586,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120983
B0129542
C0115372
D0130662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5571180.323102%
B55711071.920661%
C5571140.251301%
D5571811.453958%

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 7064 5572 6 6 0.08% 0.11%
B 7064 5572 69 69 0.98% 1.24%
C 7064 5572 4 4 0.06% 0.07%
D 7064 5572 67 67 0.95% 1.20%

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 403231 3152.6 634 619 127.7
A 9 143 43592 336.49 634 619 127.7
A 15 222 20767 157.76 634 619 127.7
B 5 255 299054 2490.02 629 611 119.9
B 4 171 151825 1261.64 629 611 119.9
B 5 184 72945 603.51 629 611 119.9
C 15 214 242435 1680.06 620 624 143.9
C 3 233 34947 238.47 620 624 143.9
C 14 254 23474 158.76 620 624 143.9
D 1 52 213506 1407.59 615 600 151.3
D 13 249 93956 617.21 615 600 151.3
D 7 223 87375 573.7 615 600 151.3

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