ASTROSAT CZTI

Data Quality Report

Orbit 39125

Creation date: 2024-06-27T22:00:44.758226
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_044T04_9000005434_39125cztM0_level2.fits modeM0/AS1A12_044T04_9000005434_39125cztM0_level2_quad_clean.evt
Size (bytes)399,021,12092,975,040
Size380.5 MB 88.7 MB
Events in quadrant A2,851,668630,899
Events in quadrant B2,713,439645,415
Events in quadrant C2,704,423617,607
Events in quadrant D6,085,737547,362

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116623
B0115012
C0111802
D0219862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5346110.205761%
B5346611.141040%
C534650.093528%
D53463897.276468%

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 7108 5347 5 5 0.07% 0.09%
B 7108 5347 39 39 0.55% 0.73%
C 7108 5347 1 1 0.01% 0.02%
D 7108 5347 495 495 6.96% 9.26%

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 457373 3699.16 613 601 123.5
A 13 248 16283 127.0 613 601 123.5
A 13 254 7286 54.14 613 601 123.5
B 5 172 227205 1966.24 607 591 115.3
B 0 190 32618 277.89 607 591 115.3
B 0 230 24274 205.49 607 591 115.3
C 15 214 229769 1648.63 596 597 139.0
C 3 233 108169 773.86 596 597 139.0
C 9 187 37190 263.25 596 597 139.0
D 12 235 2934427 20270.39 586 567 144.7
D 2 249 335060 2311.05 586 567 144.7
D 12 233 87477 600.47 586 567 144.7

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