ASTROSAT CZTI

Data Quality Report

Orbit 41733

Creation date: 2024-06-27T22:32:12.670599
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_077T11_9000005696_41733cztM0_level2.fits modeM0/AS1A12_077T11_9000005696_41733cztM0_level2_quad_clean.evt
Size (bytes)371,122,56089,663,040
Size353.9 MB 85.5 MB
Events in quadrant A3,150,359621,142
Events in quadrant B2,610,970641,984
Events in quadrant C3,212,402569,416
Events in quadrant D4,352,162512,211

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124862
B0111372
C0125932
D0165252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5292250.472411%
B5292110.207861%
C52922284.308390%
D52924648.767952%

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 7145 5293 4 4 0.06% 0.08%
B 7144 5292 0 0 0.00% 0.00%
C 7145 5293 217 217 3.04% 4.10%
D 7144 5292 453 453 6.34% 8.56%

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 552024 4338.17 618 607 127.1
A 15 223 164257 1287.49 618 607 127.1
A 3 1 30028 231.46 618 607 127.1
B 0 186 151509 1271.86 611 595 118.7
B 0 183 21824 178.91 611 595 118.7
B 0 245 19121 156.13 611 595 118.7
C 0 10 700359 5167.48 576 580 135.4
C 15 214 210558 1550.57 576 580 135.4
C 3 233 37476 272.46 576 580 135.4
D 2 249 901642 6409.2 575 558 140.6
D 13 249 603490 4288.52 575 558 140.6
D 12 79 382476 2716.49 575 558 140.6

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