ASTROSAT CZTI

Data Quality Report

Orbit 41285

Creation date: 2024-06-27T22:27:00.175535
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_011T42_9000005640_41285cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41285cztM0_level2_quad_clean.evt
Size (bytes)344,736,00088,142,400
Size328.8 MB 84.1 MB
Events in quadrant A2,867,002607,498
Events in quadrant B2,461,834629,398
Events in quadrant C3,041,298561,315
Events in quadrant D3,993,404513,584

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115313
B0105762
C0120002
D0154292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5101170.333268%
B5101140.274456%
C51012314.528524%
D51013727.292688%

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 7073 5102 13 13 0.18% 0.25%
B 7073 5102 5 5 0.07% 0.10%
C 7073 5102 238 238 3.36% 4.66%
D 7073 5102 361 361 5.10% 7.08%

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 493963 4025.48 594 585 122.6
A 2 79 66696 539.4 594 585 122.6
A 13 6 7880 59.52 594 585 122.6
B 5 255 74028 635.08 594 579 115.7
B 7 202 35998 306.25 594 579 115.7
B 12 111 14352 119.09 594 579 115.7
C 0 10 633791 4826.42 560 564 131.2
C 15 214 217556 1653.9 560 564 131.2
C 13 61 3661 23.61 560 564 131.2
D 2 249 1068271 7794.02 555 539 137.0
D 5 222 393568 2868.95 555 539 137.0
D 1 52 252741 1840.97 555 539 137.0

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