ASTROSAT CZTI

Data Quality Report

Orbit 20392

Creation date: 2024-06-27T18:14:48.937732
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/AS1A05_198T01_9000003014_20392cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20392cztM0_level2_quad_clean.evt
Size (bytes)599,636,16096,393,600
Size571.9 MB 91.9 MB
Events in quadrant A3,280,774641,279
Events in quadrant B3,413,250650,535
Events in quadrant C3,364,716625,579
Events in quadrant D7,666,539553,746

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138942
B0143322
C0141462
D0272622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6419600.934725%
B6418711.106264%
C64191031.604611%
D6419142022.121826%

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 8749 6421 3 3 0.03% 0.05%
B 8748 6420 0 0 0.00% 0.00%
C 8749 6421 0 0 0.00% 0.00%
D 8749 6419 1138 1138 13.01% 17.73%

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 96 12551 68.51 848 832 171.1
A 0 226 7285 37.72 848 832 171.1
A 3 137 6925 35.62 848 832 171.1
B 12 111 18622 111.34 850 830 159.8
B 11 111 16705 99.35 850 830 159.8
B 7 220 15151 89.62 850 830 159.8
C 14 238 129182 668.61 825 832 192.0
C 3 233 6813 31.16 825 832 192.0
C 0 207 5736 25.55 825 832 192.0
D 1 52 4328527 23364.5 766 744 185.2
D 13 153 185295 996.34 766 744 185.2
D 2 165 181985 978.47 766 744 185.2

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