ASTROSAT CZTI

Data Quality Report

Orbit 26388

Creation date: 2024-06-27T19:28:26.887764
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/AS1A09_044T02_9000003814_26388cztM0_level2.evt modeM0/AS1A09_044T02_9000003814_26388cztM0_level2_quad_clean.evt
Size (bytes)302,981,76049,083,840
Size288.9 MB 46.8 MB
Events in quadrant A2,186,549314,789
Events in quadrant B1,970,911328,404
Events in quadrant C2,137,521302,182
Events in quadrant D2,637,283288,043

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086090
B079120
C085270
D0101310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35651534.291725%
B3565752.103787%
C35651002.805049%
D35652015.638149%

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 4895 3566 87 87 1.78% 2.44%
B 4895 3566 1 1 0.02% 0.03%
C 4895 3566 1 1 0.02% 0.03%
D 4895 3566 128 128 2.61% 3.59%

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 0 13 294711 2961.9 491 483 99.3
A 13 254 5868 54.21 491 483 99.3
A 3 137 4471 40.15 491 483 99.3
B 0 230 12729 127.09 499 487 96.3
B 12 111 11425 113.55 499 487 96.3
B 11 111 10053 99.31 499 487 96.3
C 3 233 170951 1531.64 474 480 111.3
C 14 238 75881 677.46 474 480 111.3
C 2 16 38809 344.38 474 480 111.3
D 1 52 611383 5382.79 467 455 113.5
D 7 80 220289 1936.92 467 455 113.5
D 12 233 44752 390.29 467 455 113.5

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