ASTROSAT CZTI

Data Quality Report

Orbit 40879

Creation date: 2024-06-27T22:21:40.583633
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_097T01_9000005574_40879cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40879cztM0_level2_quad_clean.evt
Size (bytes)354,121,92089,121,600
Size337.7 MB 85.0 MB
Events in quadrant A2,840,418599,060
Events in quadrant B3,098,302618,957
Events in quadrant C2,545,810590,826
Events in quadrant D4,223,876529,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115253
B0126362
C0106742
D0160312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5144130.252722%
B51441242.410575%
C5144360.699844%
D51441583.071540%

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 7086 5145 6 6 0.08% 0.12%
B 7086 5145 85 85 1.20% 1.65%
C 7086 5145 32 32 0.45% 0.62%
D 7086 5145 199 199 2.81% 3.87%

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 521141 4378.94 575 563 118.9
A 2 79 53689 446.88 575 563 118.9
A 13 6 13581 109.5 575 563 118.9
B 5 255 395375 3518.2 577 561 112.2
B 4 171 237685 2113.02 577 561 112.2
B 0 229 139811 1240.86 577 561 112.2
C 15 214 217294 1624.54 568 572 133.4
C 0 10 104651 780.17 568 572 133.4
C 5 10 8591 60.11 568 572 133.4
D 12 79 1521707 11134.78 556 540 136.6
D 2 249 267349 1953.01 556 540 136.6
D 2 16 100541 732.0 556 540 136.6

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