ASTROSAT CZTI

Data Quality Report

Orbit 42679

Creation date: 2024-06-27T22:42:57.839834
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/AS1A05_013T01_9000005822_42679cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42679cztM0_level2_quad_clean.evt
Size (bytes)381,614,40081,973,440
Size363.9 MB 78.2 MB
Events in quadrant A2,775,267586,506
Events in quadrant B5,367,199458,560
Events in quadrant C2,505,493572,213
Events in quadrant D3,090,717516,648

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109522
B0191862
C0102772
D0125292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971100.201167%
B4971128325.809696%
C497150.100583%
D49711352.715751%

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 7062 4972 2 2 0.03% 0.04%
B 7062 4971 1234 1234 17.47% 24.82%
C 7062 4972 4 4 0.06% 0.08%
D 7062 4972 133 133 1.88% 2.67%

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 560616 4793.14 568 556 116.8
A 13 6 7877 62.66 568 556 116.8
A 2 79 6470 50.61 568 556 116.8
B 10 246 3252276 34741.55 484 471 93.6
B 0 245 84655 899.4 484 471 93.6
B 3 112 29772 313.05 484 471 93.6
C 15 214 211208 1636.63 554 557 128.7
C 3 233 42083 322.63 554 557 128.7
C 14 254 34708 265.33 554 557 128.7
D 2 249 706032 5216.48 550 534 135.2
D 1 52 69105 507.01 550 534 135.2
D 12 6 50848 372.02 550 534 135.2

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