ASTROSAT CZTI

Data Quality Report

Orbit 38002

Creation date: 2024-06-27T21:47:11.476584
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_38002cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38002cztM0_level2_quad_clean.evt
Size (bytes)394,315,20093,078,720
Size376.0 MB 88.8 MB
Events in quadrant A4,336,445598,230
Events in quadrant B2,711,290650,945
Events in quadrant C2,669,414635,161
Events in quadrant D4,457,442554,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164213
B0115472
C0111682
D0167972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54203987.343173%
B5420280.516605%
C542070.129151%
D54203306.088561%

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 7093 5421 303 303 4.27% 5.59%
B 7093 5421 14 14 0.20% 0.26%
C 7093 5421 4 4 0.06% 0.07%
D 7093 5421 280 280 3.95% 5.17%

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 1057734 8591.28 609 597 123.0
A 12 16 439159 3564.16 609 597 123.0
A 10 83 380266 3085.54 609 597 123.0
B 5 255 86649 728.6 616 600 118.1
B 5 200 37231 310.16 616 600 118.1
B 4 171 30018 249.09 616 600 118.1
C 15 214 231085 1650.77 601 604 139.6
C 14 254 54937 389.15 601 604 139.6
C 1 23 13964 95.69 601 604 139.6
D 1 52 1173882 8128.75 587 570 144.3
D 7 223 339805 2350.23 587 570 144.3
D 13 171 308829 2135.63 587 570 144.3

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