ASTROSAT CZTI

Data Quality Report

Orbit 13802

Creation date: 2024-06-27T16:46:17.820456
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/AS1A04_199T01_9000002040_13802cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13802cztM0_level2_quad_clean.evt
Size (bytes)1,350,864,000225,881,280
Size1.3 GB 215.4 MB
Events in quadrant A8,522,3521,428,091
Events in quadrant B8,757,9531,440,313
Events in quadrant C8,252,3091,421,130
Events in quadrant D14,170,6461,318,871

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373254
B0376743
C0365733
D0538743

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178812271.269504%
B178812241.252726%
C178811160.648733%
D1788111906.655109%

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 19657 17883 37 37 0.19% 0.21%
B 19657 17883 23 23 0.12% 0.13%
C 19657 17884 1 1 0.01% 0.01%
D 19657 17883 936 936 4.76% 5.23%

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 9 143 124622 282.61 2117 2067 433.7
A 0 23 111496 252.34 2117 2067 433.7
A 8 15 75520 169.38 2117 2067 433.7
B 8 250 159963 390.27 2113 2055 404.6
B 0 219 98426 238.18 2113 2055 404.6
B 4 80 74363 178.71 2113 2055 404.6
C 3 233 187171 385.3 2065 2074 480.4
C 13 61 14936 26.77 2065 2074 480.4
C 14 234 10629 17.81 2065 2074 480.4
D 1 52 4683713 9036.29 2004 1962 518.1
D 5 222 956681 1842.71 2004 1962 518.1
D 10 157 520415 1000.67 2004 1962 518.1

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