ASTROSAT CZTI

Data Quality Report

Orbit 39268

Creation date: 2024-06-27T22:02:29.634851
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/AS1A12_025T11_9000005454_39268cztM0_level2.fits modeM0/AS1A12_025T11_9000005454_39268cztM0_level2_quad_clean.evt
Size (bytes)556,845,12088,655,040
Size531.0 MB 84.5 MB
Events in quadrant A2,975,902644,482
Events in quadrant B3,253,705642,747
Events in quadrant C3,047,520626,661
Events in quadrant D10,885,109365,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124792
B0134482
C0128242
D0363342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5799170.293154%
B57991803.103983%
C5799370.638041%
D5800263845.482759%

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 7141 5800 4 4 0.06% 0.07%
B 7141 5800 107 107 1.50% 1.84%
C 7141 5800 26 26 0.36% 0.45%
D 7142 5801 2518 2518 35.26% 43.41%

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 451949 3383.32 652 639 133.4
A 13 254 7881 54.29 652 639 133.4
A 3 137 7394 50.64 652 639 133.4
B 5 172 497582 3955.32 638 621 125.6
B 0 190 109309 865.05 638 621 125.6
B 0 189 63596 501.22 638 621 125.6
C 15 214 260021 1728.81 637 640 150.0
C 9 187 195534 1298.99 637 640 150.0
C 3 233 97017 642.36 637 640 150.0
D 12 235 7493774 56827.88 535 520 131.9
D 2 249 754010 5714.37 535 520 131.9
D 12 227 291693 2208.22 535 520 131.9

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