ASTROSAT CZTI

Data Quality Report

Orbit 35671

Creation date: 2022-05-04T07:31:45.233501
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/AS1A09_029T02_9000005106_35671cztM0_level2.evt modeM0/AS1A09_029T02_9000005106_35671cztM0_level2_quad_clean.evt
Size (bytes)444,890,88060,713,280
Size424.3 MB 57.9 MB
Events in quadrant A2,716,586367,399
Events in quadrant B3,697,677362,854
Events in quadrant C3,496,713361,005
Events in quadrant D3,176,835349,834

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116403
B0147072
C0137172
D0131892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A568280.140795%
B56822684.716649%
C56822324.083069%
D5682550.967969%

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 9175 5684 0 0 0.00% 0.00%
B 9175 5684 182 182 1.98% 3.20%
C 9175 5684 186 186 2.03% 3.27%
D 9175 5684 45 45 0.49% 0.79%

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 149006 1134.21 650 636 130.8
A 15 169 42580 320.64 650 636 130.8
A 13 6 11080 79.84 650 636 130.8
B 5 172 907764 7379.41 636 618 122.9
B 5 255 165240 1339.16 636 618 122.9
B 0 189 50596 406.56 636 618 122.9
C 0 10 395253 2739.26 622 626 144.1
C 1 23 332623 2304.52 622 626 144.1
C 15 214 236740 1638.96 622 626 144.1
D 13 249 278931 1801.16 630 612 154.5
D 8 195 86090 553.17 630 612 154.5
D 7 80 84749 544.5 630 612 154.5

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