ASTROSAT CZTI

Data Quality Report

Orbit 40702

Creation date: 2024-06-27T22:19:21.732768
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_029T02_9000005558_40702cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40702cztM0_level2_quad_clean.evt
Size (bytes)431,755,20088,387,200
Size411.8 MB 84.3 MB
Events in quadrant A2,889,395610,138
Events in quadrant B3,002,521628,380
Events in quadrant C6,389,221539,622
Events in quadrant D3,274,558513,918

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120263
B0126162
C0228142
D0134702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5484160.291758%
B5484681.239971%
C548484515.408461%
D54844898.916849%

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 7156 5485 5 5 0.07% 0.09%
B 7156 5485 52 52 0.73% 0.95%
C 7156 5484 897 897 12.53% 16.36%
D 7156 5485 81 81 1.13% 1.48%

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 491525 3893.34 609 595 126.1
A 6 10 22473 173.5 609 595 126.1
A 2 79 10441 78.08 609 595 126.1
B 0 229 219171 1836.63 606 589 119.0
B 5 255 212034 1776.66 606 589 119.0
B 0 190 99839 833.95 606 589 119.0
C 9 187 3122133 23404.23 570 574 133.4
C 14 254 777291 5823.52 570 574 133.4
C 15 214 227548 1701.76 570 574 133.4
D 12 227 482042 3355.37 569 554 143.5
D 2 250 197708 1373.92 569 554 143.5
D 12 191 167023 1160.08 569 554 143.5

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