ASTROSAT CZTI

Data Quality Report

Orbit 16773

Creation date: 2024-06-27T17:27:27.998223
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/AS1A05_004T05_9000002488_16773cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16773cztM0_level2_quad_clean.evt
Size (bytes)344,756,16040,711,680
Size328.8 MB 38.8 MB
Events in quadrant A2,006,588242,940
Events in quadrant B2,004,034250,440
Events in quadrant C3,671,449231,945
Events in quadrant D2,493,203231,238

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083591
B083131
C0137171
D099591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3905601.536492%
B390590.230474%
C39051443.687580%
D3905591.510883%

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 3906 3906 45 45 1.15% 1.15%
B 3906 3906 1 1 0.03% 0.03%
C 3906 3906 3 3 0.08% 0.08%
D 3906 3906 36 36 0.92% 0.92%

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 15 174 144199 1472.14 483 474 97.6
A 0 13 5114 47.53 483 474 97.6
A 0 226 4320 39.39 483 474 97.6
B 15 35 53731 569.03 483 471 93.6
B 5 236 31679 333.42 483 471 93.6
B 0 219 13936 143.86 483 471 93.6
C 3 233 1801309 17137.39 451 455 105.1
C 14 238 70523 666.79 451 455 105.1
C 0 207 37382 351.41 451 455 105.1
D 1 52 306410 2692.51 463 449 113.6
D 12 110 259784 2282.19 463 449 113.6
D 10 70 90867 795.69 463 449 113.6

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