ASTROSAT CZTI

Data Quality Report

Orbit 39044

Creation date: 2024-06-27T21:59:41.812678
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_077T06_9000005430_39044cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39044cztM0_level2_quad_clean.evt
Size (bytes)348,030,72091,834,560
Size331.9 MB 87.6 MB
Events in quadrant A4,123,593609,517
Events in quadrant B2,658,516633,413
Events in quadrant C2,554,265612,054
Events in quadrant D3,133,364554,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158722
B0113341
C0108371
D0131841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53061793.373539%
B5306420.791557%
C5306110.207312%
D53061803.392386%

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 9282 5308 155 155 1.67% 2.92%
B 9282 5308 26 26 0.28% 0.49%
C 9282 5308 8 8 0.09% 0.15%
D 9282 5308 147 147 1.58% 2.77%

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 15 222 1300358 10997.65 587 577 118.2
A 10 83 401429 3391.67 587 577 118.2
A 6 10 59312 496.97 587 577 118.2
B 0 190 166732 1457.55 590 574 114.0
B 5 184 101988 889.61 590 574 114.0
B 5 172 51683 448.33 590 574 114.0
C 15 214 221859 1619.47 585 590 136.6
C 14 254 30899 221.83 585 590 136.6
C 15 208 10354 71.46 585 590 136.6
D 1 47 392339 2755.1 575 559 142.2
D 12 227 297661 2089.3 575 559 142.2
D 2 249 132467 927.61 575 559 142.2

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