ASTROSAT CZTI

Data Quality Report

Orbit 40896

Creation date: 2024-06-27T22:21:53.474127
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_097T01_9000005574_40896cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40896cztM0_level2_quad_clean.evt
Size (bytes)312,719,04084,000,960
Size298.2 MB 80.1 MB
Events in quadrant A2,636,637565,726
Events in quadrant B2,668,201586,749
Events in quadrant C2,675,932552,998
Events in quadrant D3,218,107498,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107083
B0110302
C0108412
D0127722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4839120.247985%
B4839761.570572%
C4839821.694565%
D48391062.190535%

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 6991 4840 5 5 0.07% 0.10%
B 6991 4840 43 43 0.62% 0.89%
C 6991 4840 70 70 1.00% 1.45%
D 6991 4840 85 85 1.22% 1.76%

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 474235 4140.43 550 539 114.4
A 13 6 12926 108.27 550 539 114.4
A 13 248 9729 80.33 550 539 114.4
B 4 171 355882 3373.78 551 538 105.3
B 5 255 68666 646.83 551 538 105.3
B 0 190 31410 293.11 551 538 105.3
C 15 214 204509 1625.52 536 540 125.5
C 14 254 190725 1515.67 536 540 125.5
C 0 10 115446 915.74 536 540 125.5
D 12 79 390975 2991.7 526 511 130.5
D 13 171 389126 2977.53 526 511 130.5
D 1 47 76151 579.55 526 511 130.5

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