ASTROSAT CZTI

Data Quality Report

Orbit 41691

Creation date: 2024-06-27T22:31:38.754070
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_035T02_9000005690_41691cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41691cztM0_level2_quad_clean.evt
Size (bytes)370,255,68095,296,320
Size353.1 MB 90.9 MB
Events in quadrant A3,674,016659,343
Events in quadrant B2,791,012670,039
Events in quadrant C2,968,128617,585
Events in quadrant D3,861,702569,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142563
B0115972
C0118852
D0150522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5279811.534382%
B5279611.155522%
C52801582.992424%
D52803376.382576%

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 7312 5280 59 59 0.81% 1.12%
B 7312 5280 45 45 0.62% 0.85%
C 7313 5281 153 153 2.09% 2.90%
D 7313 5281 322 322 4.40% 6.10%

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 15 223 676688 5270.57 631 617 128.3
A 10 83 547797 4265.75 631 617 128.3
A 3 1 7652 54.84 631 617 128.3
B 0 245 176064 1489.27 622 606 117.8
B 0 190 83053 699.8 622 606 117.8
B 5 255 47044 394.16 622 606 117.8
C 0 10 426102 3104.07 595 598 137.1
C 15 214 215125 1564.98 595 598 137.1
C 13 61 4180 26.13 595 598 137.1
D 2 249 776860 5409.75 597 583 143.5
D 2 120 506704 3527.08 597 583 143.5
D 13 249 186942 1298.71 597 583 143.5

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