ASTROSAT CZTI

Data Quality Report

Orbit 40059

Creation date: 2024-06-27T22:11:49.924595
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_054T03_9000005516_40059cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40059cztM0_level2_quad_clean.evt
Size (bytes)394,009,92090,331,200
Size375.8 MB 86.1 MB
Events in quadrant A2,927,373611,838
Events in quadrant B3,324,305614,524
Events in quadrant C4,792,999564,515
Events in quadrant D3,100,745548,982

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120443
B0138352
C0178422
D0132622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5647140.247919%
B56472674.728174%
C56475379.509474%
D5647921.629184%

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 7111 5648 7 7 0.10% 0.12%
B 7111 5648 136 136 1.91% 2.41%
C 7111 5648 488 488 6.86% 8.64%
D 7111 5648 79 79 1.11% 1.40%

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 481789 3835.23 614 601 125.5
A 9 143 53281 419.88 614 601 125.5
A 13 254 7657 56.24 614 601 125.5
B 4 171 874747 7381.47 602 585 118.4
B 0 230 46934 391.37 602 585 118.4
B 0 221 19075 156.13 602 585 118.4
C 9 187 2103089 15353.82 582 586 136.9
C 15 214 228522 1664.53 582 586 136.9
C 14 254 166577 1212.17 582 586 136.9
D 12 227 181321 1226.79 596 578 147.3
D 13 249 157650 1066.12 596 578 147.3
D 1 47 149672 1011.97 596 578 147.3

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