ASTROSAT CZTI

Data Quality Report

Orbit 26950

Creation date: 2024-06-27T19:34:50.524822
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_134T01_9000003896_26950cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26950cztM0_level2_quad_clean.evt
Size (bytes)957,254,40086,238,720
Size912.9 MB 82.2 MB
Events in quadrant A6,445,976565,629
Events in quadrant B10,637,617504,198
Events in quadrant C3,403,642599,946
Events in quadrant D8,078,172498,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232880
B0358690
C0139280
D0282890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6317120619.091341%
B6316308148.780874%
C6316841.329956%
D6316160925.474984%

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 7556 6316 915 915 12.11% 14.49%
B 7556 6316 2525 2525 33.42% 39.98%
C 7556 6317 35 35 0.46% 0.55%
D 7556 6316 1560 1560 20.65% 24.70%

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 14 235 3469870 23251.25 750 737 149.2
A 8 192 48943 323.09 750 737 149.2
A 5 168 26133 170.21 750 737 149.2
B 0 189 7649761 57495.72 717 702 133.0
B 10 245 97540 727.9 717 702 133.0
B 3 112 42695 315.65 717 702 133.0
C 14 238 127050 693.6 784 789 182.0
C 15 208 110013 600.01 784 789 182.0
C 2 16 104318 568.72 784 789 182.0
D 1 52 3061291 18142.58 707 687 168.7
D 12 1 1593959 9444.56 707 687 168.7
D 2 250 411988 2438.1 707 687 168.7

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