ASTROSAT CZTI

Data Quality Report

Orbit 37012

Creation date: 2024-06-27T21:34:15.198111
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_015T03_9000005260_37012cztM0_level2.evt modeM0/AS1C07_015T03_9000005260_37012cztM0_level2_quad_clean.evt
Size (bytes)295,542,72070,004,160
Size281.9 MB 66.8 MB
Events in quadrant A2,083,421462,120
Events in quadrant B2,258,110473,050
Events in quadrant C2,261,434459,370
Events in quadrant D2,069,644438,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A086871
B092031
C090451
D088011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A406370.172286%
B4063511.255230%
C4063330.812208%
D4063160.393798%

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 5856 4064 2 2 0.03% 0.05%
B 5856 4064 32 32 0.55% 0.79%
C 5856 4064 27 27 0.46% 0.66%
D 5856 4064 10 10 0.17% 0.25%

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 132255 1308.65 501 492 100.7
A 9 143 16969 163.65 501 492 100.7
A 3 137 5025 45.02 501 492 100.7
B 5 172 166500 1764.33 494 483 94.1
B 4 81 124121 1313.95 494 483 94.1
B 12 111 11349 115.48 494 483 94.1
C 15 214 172193 1496.84 491 495 114.7
C 0 10 67555 584.62 491 495 114.7
C 1 23 61469 531.56 491 495 114.7
D 2 250 104381 868.11 490 478 119.7
D 12 235 34994 288.38 490 478 119.7
D 2 153 34086 280.8 490 478 119.7

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