ASTROSAT CZTI

Data Quality Report

Orbit 41104

Creation date: 2024-06-27T22:24:31.528886
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_044T19_9000005600_41104cztM0_level2.fits modeM0/AS1A12_044T19_9000005600_41104cztM0_level2_quad_clean.evt
Size (bytes)295,660,80082,175,040
Size282.0 MB 78.4 MB
Events in quadrant A2,699,538553,692
Events in quadrant B2,800,306562,500
Events in quadrant C2,608,535525,439
Events in quadrant D2,443,828494,134

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111233
B0116992
C0109612
D0109322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5029120.238616%
B5029631.252734%
C5029621.232849%
D5029511.014118%

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 6312 5030 4 4 0.06% 0.08%
B 6312 5030 47 47 0.74% 0.93%
C 6312 5030 50 50 0.79% 0.99%
D 6312 5030 34 34 0.54% 0.68%

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 437932 3676.68 568 556 119.0
A 13 248 34864 288.4 568 556 119.0
A 2 79 21458 175.71 568 556 119.0
B 0 245 442109 3937.92 561 543 112.1
B 0 186 107606 954.8 561 543 112.1
B 0 190 22587 196.59 561 543 112.1
C 15 214 210060 1623.05 545 548 129.1
C 14 254 191198 1476.93 545 548 129.1
C 0 10 54162 415.34 545 548 129.1
D 2 249 107418 785.32 547 529 136.1
D 13 249 80852 590.14 547 529 136.1
D 5 32 67081 488.96 547 529 136.1

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