ASTROSAT CZTI

Data Quality Report

Orbit 34749

Creation date: 2024-06-27T21:04:43.404091
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_004T01_9000004990_34749cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34749cztM0_level2_quad_clean.evt
Size (bytes)847,022,40070,577,280
Size807.8 MB 67.3 MB
Events in quadrant A3,660,625438,947
Events in quadrant B3,968,829446,767
Events in quadrant C3,823,145441,506
Events in quadrant D13,701,048295,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155672
B0164121
C0158631
D0458441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7384300.406284%
B7384741.002167%
C7384260.352113%
D7384424957.543337%

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 10281 7386 7 7 0.07% 0.09%
B 10281 7386 39 39 0.38% 0.53%
C 10281 7386 14 14 0.14% 0.19%
D 10281 7386 3917 3917 38.10% 53.03%

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 15 223 103025 578.41 873 856 176.6
A 9 143 72006 402.8 873 856 176.6
A 10 83 55666 310.3 873 856 176.6
B 5 255 303134 1810.43 873 850 167.0
B 0 190 143468 854.16 873 850 167.0
B 5 172 42556 249.78 873 850 167.0
C 15 214 312302 1540.67 855 859 202.1
C 14 67 69371 338.92 855 859 202.1
C 0 10 69331 338.72 855 859 202.1
D 1 52 7594935 48997.55 627 609 155.0
D 2 250 2137897 13789.49 627 609 155.0
D 8 195 650639 4193.9 627 609 155.0

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