ASTROSAT CZTI

Data Quality Report

Orbit 27142

Creation date: 2024-06-27T19:36:57.511501
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/AS1T03_244T01_9000003912_27142cztM0_level2.evt modeM0/AS1T03_244T01_9000003912_27142cztM0_level2_quad_clean.evt
Size (bytes)513,132,48096,042,240
Size489.4 MB 91.6 MB
Events in quadrant A3,278,714630,329
Events in quadrant B3,732,530639,270
Events in quadrant C3,482,806612,617
Events in quadrant D4,610,143578,040

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137680
B0150810
C0143440
D0180500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6421490.763121%
B64211251.946737%
C64211462.273789%
D64213465.388569%

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 7586 6422 11 11 0.15% 0.17%
B 7586 6422 83 83 1.09% 1.29%
C 7586 6422 31 31 0.41% 0.48%
D 7586 6422 230 230 3.03% 3.58%

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 13 248 52710 317.34 819 804 163.6
A 14 235 45479 273.13 819 804 163.6
A 8 192 18118 105.85 819 804 163.6
B 10 245 312649 2037.53 817 797 153.1
B 3 112 135640 881.01 817 797 153.1
B 0 189 22964 144.83 817 797 153.1
C 15 208 171728 916.8 794 800 186.4
C 14 238 127658 680.43 794 800 186.4
C 2 16 91480 486.38 794 800 186.4
D 1 52 1142897 5786.82 775 760 197.4
D 7 38 261833 1322.77 775 760 197.4
D 12 233 163724 825.68 775 760 197.4

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