ASTROSAT CZTI

Data Quality Report

Orbit 40204

Creation date: 2024-06-27T22:13:35.345946
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_053T01_9000005530_40204cztM0_level2.fits modeM0/AS1A12_053T01_9000005530_40204cztM0_level2_quad_clean.evt
Size (bytes)334,704,96093,994,560
Size319.2 MB 89.6 MB
Events in quadrant A3,010,705622,983
Events in quadrant B3,055,669634,094
Events in quadrant C2,794,615625,767
Events in quadrant D3,086,387566,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124633
B0130032
C0115772
D0131322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5678270.475520%
B56781402.465657%
C567840.070447%
D5678791.391335%

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 7141 5679 15 15 0.21% 0.26%
B 7141 5679 89 89 1.25% 1.57%
C 7141 5679 1 1 0.01% 0.02%
D 7141 5679 70 70 0.98% 1.23%

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 509023 3969.11 621 609 128.1
A 13 248 73516 569.17 621 609 128.1
A 7 191 9088 66.19 621 609 128.1
B 5 255 456649 3767.48 617 600 121.0
B 7 202 54991 449.33 617 600 121.0
B 4 171 46044 375.42 617 600 121.0
C 15 214 238301 1635.23 617 620 145.3
C 4 254 120656 825.84 617 620 145.3
C 0 10 14225 93.6 617 620 145.3
D 12 227 445071 2957.81 610 592 150.3
D 9 19 90195 596.27 610 592 150.3
D 13 249 75524 498.64 610 592 150.3

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