ASTROSAT CZTI

Data Quality Report

Orbit 38297

Creation date: 2024-06-27T21:50:54.861843
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/AS1A07_145T01_9000005370_38297cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38297cztM0_level2_quad_clean.evt
Size (bytes)558,025,92088,009,920
Size532.2 MB 83.9 MB
Events in quadrant A2,959,588644,691
Events in quadrant B2,939,865655,238
Events in quadrant C2,808,646619,252
Events in quadrant D11,505,233346,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122033
B0125312
C0118442
D0381302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5704140.245442%
B5704611.069425%
C5704280.490884%
D5704277548.650070%

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 7257 5705 5 5 0.07% 0.09%
B 7257 5705 34 34 0.47% 0.60%
C 7257 5705 20 20 0.28% 0.35%
D 7257 5705 2978 2978 41.04% 52.20%

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 399892 3101.28 635 620 128.7
A 12 189 53220 408.56 635 620 128.7
A 13 6 22022 166.24 635 620 128.7
B 5 184 228765 1877.54 627 610 121.5
B 0 183 65540 534.32 627 610 121.5
B 0 199 54262 441.51 627 610 121.5
C 15 214 240032 1674.49 614 616 143.0
C 2 16 76301 529.35 614 616 143.0
C 15 208 54890 379.6 614 616 143.0
D 10 203 7219895 54863.52 543 527 131.6
D 2 16 1514882 11508.33 543 527 131.6
D 13 138 275914 2092.8 543 527 131.6

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