ASTROSAT CZTI

Data Quality Report

Orbit 20231129_A13_074T04_9000005962_level2

Creation date: 2023-12-04T12:30:35.046055
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/AS1A13_074T04_9000005962cztM0_level2.fits modeM0/AS1A13_074T04_9000005962cztM0_level2_quad_clean.evt
Size (bytes)181,526,400163,656,000
Size173.1 MB 156.1 MB
Events in quadrant A1,025,246873,060
Events in quadrant B1,066,516967,288
Events in quadrant C1,087,854906,642
Events in quadrant D920,334812,161

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0748550
B0470110
C0442690
D0559560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20269246912.181163%
B202694632.284276%
C202692051.011397%
D2026911385.614485%

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 23110 20132 0 0 0.00% 0.00%
B 23110 20268 0 0 0.00% 0.00%
C 23110 20270 0 0 0.00% 0.00%
D 23110 20251 0 0 0.00% 0.00%

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 7 110 882 9.0 267 250 70.2
A 15 236 838 8.37 267 250 70.2
A 0 29 831 8.27 267 250 70.2
B 2 9 979 12.08 281 267 58.9
B 2 8 776 8.64 281 267 58.9
B 3 17 759 8.35 281 267 58.9
C 1 81 851 7.75 288 268 75.2
C 1 80 844 7.66 288 268 75.2
C 3 202 840 7.6 288 268 75.2
D 8 176 805 7.53 263 239 75.2
D 6 79 722 6.42 263 239 75.2
D 8 192 691 6.01 263 239 75.2

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