ASTROSAT CZTI

Data Quality Report

Orbit 41705

Creation date: 2024-06-27T22:31:50.026361
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_077T12_9000005692_41705cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41705cztM0_level2_quad_clean.evt
Size (bytes)373,890,24096,206,400
Size356.6 MB 91.7 MB
Events in quadrant A3,098,493679,018
Events in quadrant B2,552,678694,997
Events in quadrant C2,829,684642,475
Events in quadrant D4,939,385519,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124472
B0109132
C0115042
D0181322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5392200.370920%
B539260.111276%
C5392420.778932%
D539282715.337537%

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 7334 5393 2 2 0.03% 0.04%
B 7334 5393 1 1 0.01% 0.02%
C 7334 5393 30 30 0.41% 0.56%
D 7334 5393 820 820 11.18% 15.20%

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 531465 3959.36 657 645 134.1
A 2 79 17962 129.17 657 645 134.1
A 13 248 11131 78.21 657 645 134.1
B 12 111 15498 119.82 642 625 124.1
B 11 111 14527 112.0 642 625 124.1
B 14 111 13982 107.61 642 625 124.1
C 15 214 223991 1527.92 628 634 146.2
C 0 10 117728 801.01 628 634 146.2
C 15 111 23126 153.86 628 634 146.2
D 2 249 1858999 13105.23 583 568 141.8
D 13 249 474196 3339.92 583 568 141.8
D 2 120 202286 1422.47 583 568 141.8

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