ASTROSAT CZTI

Data Quality Report

Orbit 36893

Creation date: 2024-06-27T21:32:55.358609
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/AS1C07_010T01_9000005246_36893cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36893cztM0_level2_quad_clean.evt
Size (bytes)366,894,72053,608,320
Size349.9 MB 51.1 MB
Events in quadrant A2,719,151426,900
Events in quadrant B844,1166,772
Events in quadrant C2,739,032415,501
Events in quadrant D4,430,952388,925

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116373
B055902
C0114432
D0168912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5472170.310673%
B54725472100.000000%
C5472190.347222%
D54723195.829678%

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 7114 5473 4 4 0.06% 0.07%
B 7113 5471 1 1 0.01% 0.02%
C 7114 5473 8 8 0.11% 0.15%
D 7113 5472 294 294 4.13% 5.37%

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 242615 1889.92 628 616 128.0
A 13 6 14744 110.33 628 616 128.0
A 9 143 13352 99.46 628 616 128.0
B 12 243 756904 188910.96 11 11 4.0
B 12 144 14035 3500.21 11 11 4.0
B 5 255 9447 2355.11 11 11 4.0
C 15 214 236402 1650.35 609 614 142.9
C 0 10 104530 727.34 609 614 142.9
C 15 159 18553 125.56 609 614 142.9
D 12 235 1395784 9461.34 597 580 147.5
D 13 249 442062 2993.83 597 580 147.5
D 5 32 82410 554.92 597 580 147.5

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