ASTROSAT CZTI

Data Quality Report

Orbit 34325

Creation date: 2024-06-27T20:59:07.294972
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/AS1A05_082T08_9000004900_34325cztM0_level2.evt modeM0/AS1A05_082T08_9000004900_34325cztM0_level2_quad_clean.evt
Size (bytes)502,632,00073,811,520
Size479.3 MB 70.4 MB
Events in quadrant A2,734,108459,467
Events in quadrant B3,788,798453,510
Events in quadrant C3,224,949465,086
Events in quadrant D5,067,252437,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121383
B0151382
C0132002
D0194172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A601070.116473%
B60102744.559068%
C6010420.698835%
D60103065.091514%

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 7443 6011 1 1 0.01% 0.02%
B 7443 6011 179 179 2.40% 2.98%
C 7443 6011 32 32 0.43% 0.53%
D 7443 6011 210 210 2.82% 3.49%

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 30312 211.99 696 683 139.8
A 13 6 12386 83.73 696 683 139.8
A 13 254 9189 60.86 696 683 139.8
B 5 172 907979 6840.27 682 665 132.6
B 0 229 48615 361.5 682 665 132.6
B 4 251 29584 218.02 682 665 132.6
C 15 214 252447 1597.22 678 685 157.6
C 14 254 192423 1216.41 678 685 157.6
C 0 10 67539 424.13 678 685 157.6
D 8 195 855591 5176.65 669 649 165.2
D 12 235 764584 4625.61 669 649 165.2
D 10 118 543270 3285.56 669 649 165.2

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