ASTROSAT CZTI

Data Quality Report

Orbit 41357

Creation date: 2024-06-27T22:28:04.996392
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/AS1T05_105T01_9000005658_41357cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41357cztM0_level2_quad_clean.evt
Size (bytes)332,337,60089,328,960
Size316.9 MB 85.2 MB
Events in quadrant A2,720,937614,177
Events in quadrant B2,426,125630,472
Events in quadrant C3,026,499571,576
Events in quadrant D3,730,838530,678

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111773
B0106822
C0121002
D0146292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5105120.235064%
B5105370.724780%
C51052494.877571%
D51052334.564153%

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 7048 5106 4 4 0.06% 0.08%
B 7048 5106 23 23 0.33% 0.45%
C 7048 5106 240 240 3.41% 4.70%
D 7048 5106 267 267 3.79% 5.23%

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 484757 4169.88 569 559 116.1
A 12 189 31279 264.56 569 559 116.1
A 3 137 6376 50.1 569 559 116.1
B 5 255 117239 1074.78 569 554 108.6
B 0 190 47499 432.41 569 554 108.6
B 12 111 13788 121.9 569 554 108.6
C 0 10 686940 5425.91 540 545 126.5
C 15 214 210844 1662.4 540 545 126.5
C 15 111 15882 121.24 540 545 126.5
D 1 52 552065 4134.06 544 530 133.4
D 5 222 527013 3946.29 544 530 133.4
D 13 249 272581 2039.18 544 530 133.4

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