ASTROSAT CZTI

Data Quality Report

Orbit 24185

Creation date: 2024-06-27T19:03:12.071446
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/AS1A07_067T01_9000003578_24185cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24185cztM0_level2_quad_clean.evt
Size (bytes)485,634,24098,389,440
Size463.1 MB 93.8 MB
Events in quadrant A3,139,950644,673
Events in quadrant B3,222,565668,130
Events in quadrant C3,266,062628,833
Events in quadrant D4,646,980593,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133202
B0135312
C0137542
D0182382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6362280.440113%
B6363510.801509%
C6363891.398711%
D63631572.467390%

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 8747 6363 0 0 0.00% 0.00%
B 8748 6364 2 2 0.02% 0.03%
C 8748 6365 4 4 0.05% 0.06%
D 8748 6365 111 111 1.27% 1.74%

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 10077 57.27 814 800 162.0
A 0 226 6933 37.86 814 800 162.0
A 3 137 6890 37.59 814 800 162.0
B 12 111 18125 112.2 820 802 154.4
B 11 111 15962 98.19 820 802 154.4
B 14 111 14225 86.94 820 802 154.4
C 14 238 128523 710.31 781 788 179.8
C 2 16 61741 338.95 781 788 179.8
C 7 247 12398 64.56 781 788 179.8
D 7 238 930796 4969.13 773 751 187.2
D 1 52 447025 2384.39 773 751 187.2
D 8 195 214298 1140.96 773 751 187.2

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