ASTROSAT CZTI

Data Quality Report

Orbit 40154

Creation date: 2024-06-27T22:12:59.916994
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_068T02_9000005524_40154cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40154cztM0_level2_quad_clean.evt
Size (bytes)625,668,48072,794,880
Size596.7 MB 69.4 MB
Events in quadrant A3,234,516593,098
Events in quadrant B2,681,535631,961
Events in quadrant C13,166,26758,667
Events in quadrant D3,665,490549,464

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130443
B0115642
C0427702
D0146442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52982424.567761%
B5298821.547754%
C5298490992.657607%
D52982214.171385%

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 7151 5299 206 206 2.88% 3.89%
B 7151 5299 50 50 0.70% 0.94%
C 7150 5297 4944 4944 69.15% 93.34%
D 7151 5299 215 215 3.01% 4.06%

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 13 248 499800 4226.2 578 568 118.1
A 10 83 425637 3598.38 578 568 118.1
A 9 143 54751 458.68 578 568 118.1
B 5 172 165407 1428.12 594 578 115.4
B 5 255 82637 710.98 594 578 115.4
B 0 190 48924 418.88 594 578 115.4
C 9 187 11827169 169122.7 298 301 69.9
C 15 214 118343 1687.99 298 301 69.9
C 0 10 20917 294.81 298 301 69.9
D 12 227 510931 3626.99 575 560 140.7
D 12 218 482811 3427.16 575 560 140.7
D 13 249 180092 1275.86 575 560 140.7

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