ASTROSAT CZTI

Data Quality Report

Orbit 33739

Creation date: 2024-06-27T20:51:59.003527
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/AS1A11_086T01_9000004816_33739cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33739cztM0_level2_quad_clean.evt
Size (bytes)498,746,88052,824,960
Size475.6 MB 50.4 MB
Events in quadrant A2,771,947314,572
Events in quadrant B3,500,824306,352
Events in quadrant C3,120,000310,198
Events in quadrant D5,339,652283,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116303
B0138132
C0124282
D0198432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5488270.491983%
B54881723.134111%
C5488510.929300%
D54882694.901603%

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 7311 5489 20 20 0.27% 0.36%
B 7311 5489 120 120 1.64% 2.19%
C 7311 5489 39 39 0.53% 0.71%
D 7311 5489 247 247 3.38% 4.50%

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 14 4 80230 578.13 692 678 137.6
A 13 254 10143 68.79 692 678 137.6
A 10 83 9701 65.57 692 678 137.6
B 5 172 381111 2949.64 681 665 129.0
B 5 255 232475 1797.25 681 665 129.0
B 4 170 63755 489.14 681 665 129.0
C 15 214 239587 1557.33 673 676 153.4
C 0 10 138716 899.81 673 676 153.4
C 14 254 48471 311.55 673 676 153.4
D 8 195 1402204 8689.4 662 645 161.3
D 7 80 447692 2771.61 662 645 161.3
D 1 52 302366 1870.61 662 645 161.3

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