ASTROSAT CZTI

Data Quality Report

Orbit 39941

Creation date: 2024-06-27T22:10:23.259687
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/AS1A12_044T21_9000005512_39941cztM0_level2.fits modeM0/AS1A12_044T21_9000005512_39941cztM0_level2_quad_clean.evt
Size (bytes)506,986,56083,021,760
Size483.5 MB 79.2 MB
Events in quadrant A2,855,414612,318
Events in quadrant B3,734,125599,383
Events in quadrant C7,175,914448,203
Events in quadrant D4,593,253485,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114253
B0145932
C0249922
D0171462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525670.133181%
B52562755.232116%
C5256158830.213090%
D525666812.709285%

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 7319 5257 4 4 0.05% 0.08%
B 7319 5257 231 231 3.16% 4.39%
C 7319 5257 1143 1143 15.62% 21.74%
D 7319 5257 683 683 9.33% 12.99%

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 484728 3878.09 603 592 124.8
A 14 250 9618 72.3 603 592 124.8
A 11 84 7495 55.3 603 592 124.8
B 4 170 1085613 9554.98 587 570 113.6
B 5 255 201958 1773.44 587 570 113.6
B 0 230 47852 416.37 587 570 113.6
C 9 54 4911115 39890.81 523 526 123.1
C 15 214 203119 1645.75 523 526 123.1
C 0 10 15297 119.99 523 526 123.1
D 12 227 1327449 9620.1 555 539 137.9
D 12 233 373900 2706.87 555 539 137.9
D 2 250 361750 2618.78 555 539 137.9

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