ASTROSAT CZTI

Data Quality Report

Orbit 39371

Creation date: 2024-06-27T22:03:45.939327
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_018T01_9000005470_39371cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39371cztM0_level2_quad_clean.evt
Size (bytes)358,125,12088,724,160
Size341.5 MB 84.6 MB
Events in quadrant A2,705,416599,699
Events in quadrant B2,961,297606,268
Events in quadrant C2,540,981587,514
Events in quadrant D4,635,995521,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114973
B0125382
C0109382
D0174882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5305130.245052%
B53051202.262017%
C530590.169651%
D53053135.900094%

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 7038 5306 4 4 0.06% 0.08%
B 7038 5306 60 60 0.85% 1.13%
C 7038 5306 6 6 0.09% 0.11%
D 7038 5306 251 251 3.57% 4.73%

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 421244 3540.83 583 571 118.8
A 3 1 16253 132.0 583 571 118.8
A 13 254 9562 75.68 583 571 118.8
B 5 172 533933 4702.25 579 563 113.4
B 5 255 125439 1100.92 579 563 113.4
B 0 230 15917 135.36 579 563 113.4
C 15 214 227246 1694.37 574 578 133.8
C 0 10 20312 147.51 574 578 133.8
C 3 233 17988 130.14 574 578 133.8
D 12 235 1584418 11591.05 558 543 136.6
D 13 249 743082 5434.02 558 543 136.6
D 2 249 62276 451.77 558 543 136.6

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