ASTROSAT CZTI

Data Quality Report

Orbit 04253

Creation date: 2024-06-27T14:39:23.186648
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/AS1G05_240T01_9000000536_04253cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04253cztM0_level2_quad_clean.evt
Size (bytes)676,745,28071,153,280
Size645.4 MB 67.9 MB
Events in quadrant A5,879,987420,873
Events in quadrant B3,860,007445,971
Events in quadrant C2,841,659436,318
Events in quadrant D7,491,362415,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214242
B0154241
C0126971
D0265441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6237101316.241783%
B62371782.853936%
C6237140.224467%
D6237162025.974026%

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 7437 6238 844 844 11.35% 13.53%
B 7437 6238 117 117 1.57% 1.88%
C 7437 6238 0 0 0.00% 0.00%
D 7437 6238 1548 1548 20.81% 24.82%

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 0 199 2793150 19336.66 706 693 144.4
A 0 226 254543 1757.81 706 693 144.4
A 0 149 63587 435.52 706 693 144.4
B 14 167 799250 5607.54 742 727 142.4
B 15 204 116528 813.2 742 727 142.4
B 4 81 17299 116.38 742 727 142.4
C 9 144 45073 265.9 715 717 166.8
C 13 61 5904 31.09 715 717 166.8
C 10 65 2030 7.87 715 717 166.8
D 4 95 4109725 27198.58 622 604 151.1
D 11 132 393333 2599.5 622 604 151.1
D 2 136 222174 1466.59 622 604 151.1

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