ASTROSAT CZTI

Data Quality Report

Orbit 28195

Creation date: 2024-06-27T19:49:01.846233
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_090T16_9000004070_28195cztM0_level2.evt modeM0/AS1A10_090T16_9000004070_28195cztM0_level2_quad_clean.evt
Size (bytes)521,959,68084,047,040
Size497.8 MB 80.2 MB
Events in quadrant A3,163,946537,347
Events in quadrant B3,146,482547,413
Events in quadrant C3,332,126525,605
Events in quadrant D5,737,006494,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136220
B0135110
C0140380
D0214040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172
B0171
C0171
D0183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310470.744849%
B6305510.808882%
C63071091.728238%
D63024527.172326%

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 7561 6320 2 2 0.03% 0.03%
B 7561 6318 1 1 0.01% 0.02%
C 7560 6318 6 6 0.08% 0.09%
D 7560 6316 405 405 5.36% 6.41%

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 12 16 71751 445.93 794 779 159.2
A 12 194 16948 101.59 794 779 159.2
A 8 192 10550 61.39 794 779 159.2
B 0 230 20257 128.69 793 774 151.4
B 12 111 18233 115.32 793 774 151.4
B 11 111 16347 102.86 793 774 151.4
C 3 233 208125 1164.84 768 774 178.0
C 14 238 125337 699.76 768 774 178.0
C 13 61 5121 24.42 768 774 178.0
D 1 52 2378821 13364.29 752 733 177.9
D 5 222 292254 1638.28 752 733 177.9
D 8 195 140553 785.76 752 733 177.9

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