ASTROSAT CZTI

Data Quality Report

Orbit 00948

Creation date: 2024-06-27T14:05:10.442803
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/AS1P01_998T01_9000000188_00948cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00948cztM0_level2_quad_clean.evt
Size (bytes)1,073,983,680100,287,360
Size1.0 GB 95.6 MB
Events in quadrant A7,958,097649,793
Events in quadrant B8,537,134649,160
Events in quadrant C8,081,660638,464
Events in quadrant D7,498,194626,336

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284970
B0302110
C0288310
D0271240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A679470.103032%
B6794390.574036%
C679420.029438%
D6794280.412128%

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 7359 6795 138 138 1.88% 2.03%
B 7359 6795 215 215 2.92% 3.16%
C 7359 6795 147 147 2.00% 2.16%
D 7359 6795 148 148 2.01% 2.18%

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 12 243 13519 23.12 2067 2079 494.7
A 14 170 11320 18.68 2067 2079 494.7
A 11 79 9369 14.74 2067 2079 494.7
B 5 249 104046 198.49 2163 2177 513.2
B 12 52 78175 148.08 2163 2177 513.2
B 8 234 66731 125.78 2163 2177 513.2
C 15 241 334320 617.95 1931 1995 537.8
C 10 34 144480 264.95 1931 1995 537.8
C 3 111 30418 52.85 1931 1995 537.8
D 1 4 229863 392.93 1872 1939 580.1
D 2 107 141514 240.62 1872 1939 580.1
D 12 22 88839 149.81 1872 1939 580.1

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