ASTROSAT CZTI

Data Quality Report

Orbit 28699

Creation date: 2024-06-27T19:55:06.379209
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/AS1A10_021T08_9000004118_28699cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28699cztM0_level2_quad_clean.evt
Size (bytes)437,713,92085,587,840
Size417.4 MB 81.6 MB
Events in quadrant A2,950,523546,185
Events in quadrant B3,008,147558,069
Events in quadrant C3,009,264533,148
Events in quadrant D3,859,957514,776

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128671
B0130161
C0130101
D0158771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301210.333280%
B6300400.634921%
C63001081.714286%
D6300390.619048%

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 7346 6301 0 0 0.00% 0.00%
B 7345 6300 6 6 0.08% 0.10%
C 7345 6300 0 0 0.00% 0.00%
D 7345 6300 10 10 0.14% 0.16%

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 13 254 11220 68.5 760 745 152.9
A 14 239 7963 47.2 760 745 152.9
A 3 137 7293 42.82 760 745 152.9
B 10 247 31792 216.42 756 737 143.5
B 12 111 17889 119.53 756 737 143.5
B 11 111 16023 106.52 756 737 143.5
C 14 238 139865 816.17 726 728 170.5
C 14 254 33320 191.18 726 728 170.5
C 3 233 9519 51.57 726 728 170.5
D 1 52 496434 2844.98 730 709 174.2
D 8 195 343561 1967.64 730 709 174.2
D 13 104 136077 776.88 730 709 174.2

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