ASTROSAT CZTI

Data Quality Report

Orbit 34130

Creation date: 2024-06-27T20:56:48.806650
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/AS1A11_097T08_9000004874_34130cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34130cztM0_level2_quad_clean.evt
Size (bytes)478,486,08087,937,920
Size456.3 MB 83.9 MB
Events in quadrant A2,520,429584,245
Events in quadrant B2,927,695597,983
Events in quadrant C3,571,500571,989
Events in quadrant D5,102,482528,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110552
B0122211
C0140271
D0191631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543960.110314%
B5439510.937672%
C54391502.757860%
D54395189.523810%

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 8936 5441 2 2 0.02% 0.04%
B 8936 5441 26 26 0.29% 0.48%
C 8936 5441 108 108 1.21% 1.98%
D 8936 5441 495 495 5.54% 9.10%

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 20123 150.39 643 632 129.6
A 13 6 9689 69.88 643 632 129.6
A 13 254 9586 69.09 643 632 129.6
B 0 189 56943 460.82 646 631 122.2
B 4 251 56184 454.61 646 631 122.2
B 0 219 52668 425.84 646 631 122.2
C 0 10 856727 5916.37 622 628 144.7
C 15 214 232720 1603.95 622 628 144.7
C 15 159 23761 159.87 622 628 144.7
D 8 195 880402 5564.07 600 586 158.1
D 10 118 852059 5384.83 600 586 158.1
D 14 52 407531 2573.57 600 586 158.1

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