ASTROSAT CZTI

Data Quality Report

Orbit 44649

Creation date: 2024-06-27T23:04:53.849759
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/AS1A13_072T01_9000006008_44649cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44649cztM0_level2_quad_clean.evt
Size (bytes)462,548,160108,109,440
Size441.1 MB 103.1 MB
Events in quadrant A4,960,925734,064
Events in quadrant B3,000,067770,190
Events in quadrant C3,198,463719,603
Events in quadrant D5,461,444599,696

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200422
B0134802
C0144152
D0208263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64501422.201550%
B6450430.666667%
C6450721.116279%
D645070710.961240%

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 7615 6451 20 20 0.26% 0.31%
B 7615 6451 5 5 0.07% 0.08%
C 7615 6451 70 70 0.92% 1.09%
D 7615 6451 580 580 7.62% 8.99%

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 1983735 13607.1 716 703 145.7
A 13 248 134909 920.89 716 703 145.7
A 10 248 38725 260.9 716 703 145.7
B 0 183 62348 444.86 721 701 138.6
B 0 219 24490 171.67 721 701 138.6
B 5 172 17662 122.4 721 701 138.6
C 15 252 374592 2321.9 697 702 161.0
C 2 14 51289 314.15 697 702 161.0
C 14 254 26972 163.14 697 702 161.0
D 1 52 1234273 7413.32 666 644 166.4
D 13 249 846932 5085.65 666 644 166.4
D 13 153 246736 1478.85 666 644 166.4

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