ASTROSAT CZTI

Data Quality Report

Orbit 39161

Creation date: 2024-06-27T22:01:15.627377
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_054T02_9000005444_39161cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39161cztM0_level2_quad_clean.evt
Size (bytes)478,681,92089,933,760
Size456.5 MB 85.8 MB
Events in quadrant A2,903,659638,985
Events in quadrant B2,511,110641,205
Events in quadrant C2,636,253612,733
Events in quadrant D9,235,275440,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121482
B0114641
C0113501
D0312801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574230.412630%
B5574360.645856%
C557470.125583%
D5574169030.319340%

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 7066 5575 11 11 0.16% 0.20%
B 7066 5575 21 21 0.30% 0.38%
C 7066 5575 3 3 0.04% 0.05%
D 7066 5575 1680 1680 23.78% 30.13%

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 448397 3606.46 615 603 124.2
A 13 248 49179 391.22 615 603 124.2
A 15 223 22803 178.8 615 603 124.2
B 5 172 100356 853.03 609 592 117.0
B 12 111 14496 118.89 609 592 117.0
B 11 111 13411 109.61 609 592 117.0
C 15 214 231815 1665.02 600 601 138.9
C 9 187 36509 258.58 600 601 138.9
C 3 233 18595 129.58 600 601 138.9
D 12 235 6282553 46759.91 551 535 134.3
D 2 249 326772 2428.33 551 535 134.3
D 12 233 222380 1651.29 551 535 134.3

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