ASTROSAT CZTI

Data Quality Report

Orbit 39697

Creation date: 2024-06-27T22:07:53.489734
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_011T22_9000005492_39697cztM0_level2.fits modeM0/AS1A12_011T22_9000005492_39697cztM0_level2_quad_clean.evt
Size (bytes)611,642,88085,809,600
Size583.3 MB 81.8 MB
Events in quadrant A10,375,377430,763
Events in quadrant B3,301,116628,238
Events in quadrant C5,613,182575,873
Events in quadrant D2,911,760566,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347282
B0137431
C0205471
D0128191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5672243442.912553%
B56722223.913963%
C56725269.273625%
D56721051.851199%

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 7134 5673 2315 2315 32.45% 40.81%
B 7134 5673 151 151 2.12% 2.66%
C 7134 5673 588 588 8.24% 10.36%
D 7134 5673 91 91 1.28% 1.60%

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 15 222 6849438 61573.49 544 533 111.2
A 6 10 772809 6942.97 544 533 111.2
A 10 83 380408 3415.18 544 533 111.2
B 5 172 515261 4368.03 603 586 117.8
B 10 246 341016 2889.22 603 586 117.8
B 0 230 47314 396.58 603 586 117.8
C 15 208 1845852 13673.43 581 585 135.0
C 9 187 1232668 9129.73 581 585 135.0
C 15 214 227877 1684.23 581 585 135.0
D 2 153 228086 1575.98 590 573 144.4
D 12 227 152610 1053.16 590 573 144.4
D 12 233 148013 1021.32 590 573 144.4

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