ASTROSAT CZTI

Data Quality Report

Orbit 39218

Creation date: 2024-06-27T22:01:54.547638
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_054T04_9000005446_39218cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39218cztM0_level2_quad_clean.evt
Size (bytes)521,377,92082,535,040
Size497.2 MB 78.7 MB
Events in quadrant A2,871,174623,060
Events in quadrant B3,018,700611,908
Events in quadrant C2,499,095582,518
Events in quadrant D10,496,551308,248

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118713
B0126442
C0107782
D0348582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5323500.939320%
B53231562.930678%
C532380.150291%
D5323290254.518129%

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 7116 5324 26 26 0.37% 0.49%
B 7116 5324 107 107 1.50% 2.01%
C 7116 5324 2 2 0.03% 0.04%
D 7116 5324 2438 2438 34.26% 45.79%

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 441684 3681.83 590 578 119.8
A 13 248 118875 987.4 590 578 119.8
A 0 8 23454 190.94 590 578 119.8
B 5 255 514405 4645.16 579 564 110.6
B 5 172 199316 1796.73 579 564 110.6
B 0 190 23605 208.29 579 564 110.6
C 15 214 220032 1655.12 571 574 132.6
C 3 233 33890 251.26 571 574 132.6
C 0 10 9955 70.75 571 574 132.6
D 12 235 8046326 73144.06 450 437 110.0
D 1 47 257055 2332.88 450 437 110.0
D 2 249 192222 1743.49 450 437 110.0

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