ASTROSAT CZTI

Data Quality Report

Orbit 04951

Creation date: 2024-06-27T14:49:15.091823
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_157T01_9000000626_04951cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04951cztM0_level2_quad_clean.evt
Size (bytes)496,065,60083,626,560
Size473.1 MB 79.8 MB
Events in quadrant A3,615,382527,313
Events in quadrant B3,237,419536,024
Events in quadrant C2,823,471535,302
Events in quadrant D4,920,625495,123

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149082
B0136911
C0129031
D0187851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62792814.475235%
B6279871.385571%
C6279500.796305%
D62794477.118968%

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 7474 6279 166 166 2.22% 2.64%
B 7474 6279 8 8 0.11% 0.13%
C 7474 6280 0 0 0.00% 0.00%
D 7474 6279 343 343 4.59% 5.46%

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 31 724289 4734.17 744 728 152.8
A 4 2 13042 80.57 744 728 152.8
A 15 174 12589 77.61 744 728 152.8
B 15 204 113531 780.13 757 741 144.6
B 10 16 81292 557.15 757 741 144.6
B 4 80 69525 475.76 757 741 144.6
C 12 4 7163 39.04 720 723 165.0
C 13 61 5915 31.47 720 723 165.0
C 1 16 4066 20.27 720 723 165.0
D 2 33 889729 5088.28 711 689 174.7
D 1 7 465983 2663.04 711 689 174.7
D 13 235 446688 2552.61 711 689 174.7

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