ASTROSAT CZTI

Data Quality Report

Orbit 20151006_P01_003T01_9000000002_level2

Creation date: 2025-01-06T13:27:45.735942
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/AS1P01_003T01_9000000002cztM0_level2.fits modeM0/AS1P01_003T01_9000000002cztM0_level2_quad_clean.evt
Size (bytes)440,409,600420,206,400
Size420.0 MB 400.7 MB
Events in quadrant A2,503,6302,357,713
Events in quadrant B2,500,0222,378,710
Events in quadrant C2,529,3222,266,712
Events in quadrant D2,068,7621,987,074

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011220
C011180
D011160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02478760
B02474760
C02364260
D02577400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546517051.290004%
B544493000.550974%
C546515931.085067%
D5398012042.230456%

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 84498 54752 0 0 0.00% 0.00%
B 84498 54574 0 0 0.00% 0.00%
C 84498 54759 0 0 0.00% 0.00%
D 84498 54105 0 0 0.00% 0.00%

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 7 110 2507 12.51 653 609 151.7
A 0 29 2235 10.72 653 609 151.7
A 9 108 1762 7.6 653 609 151.7
B 2 9 2077 12.39 667 636 116.3
B 14 254 1709 9.23 667 636 116.3
B 5 225 1565 7.99 667 636 116.3
C 3 203 2170 9.37 670 621 165.2
C 3 187 1780 7.01 670 621 165.2
C 3 202 1763 6.91 670 621 165.2
D 6 231 1647 7.48 600 548 146.8
D 11 82 1595 7.13 600 548 146.8
D 10 189 1565 6.93 600 548 146.8

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