ASTROSAT CZTI

Data Quality Report

Orbit 18988

Creation date: 2024-06-27T17:57:37.856644
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/AS1A05_132T01_9000002828_18988cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18988cztM0_level2_quad_clean.evt
Size (bytes)545,984,640105,750,720
Size520.7 MB 100.9 MB
Events in quadrant A3,161,872700,094
Events in quadrant B3,560,074720,663
Events in quadrant C3,247,134701,073
Events in quadrant D6,139,966641,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133512
B0147382
C0135352
D0227142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293320.508502%
B62931161.843318%
C6293520.826315%
D62934537.198474%

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 7493 6294 2 2 0.03% 0.03%
B 7493 6294 43 43 0.57% 0.68%
C 7493 6294 0 0 0.00% 0.00%
D 7493 6294 334 334 4.46% 5.31%

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 4 2 85430 524.75 796 781 161.3
A 0 226 6790 37.25 796 781 161.3
A 13 254 6187 33.51 796 781 161.3
B 3 112 286910 1867.69 804 784 153.2
B 7 220 71405 460.98 804 784 153.2
B 0 183 39186 250.67 804 784 153.2
C 14 238 122174 662.1 783 790 183.3
C 3 233 66969 360.98 783 790 183.3
C 13 61 5517 25.78 783 790 183.3
D 7 238 2279690 12350.7 762 742 184.5
D 1 52 898710 4866.51 762 742 184.5
D 7 38 31380 166.04 762 742 184.5

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