ASTROSAT CZTI

Data Quality Report

Orbit 15630

Creation date: 2024-06-27T17:11:20.922377
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/AS1T02_086T01_9000002316_15630cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15630cztM0_level2_quad_clean.evt
Size (bytes)464,679,36081,711,360
Size443.2 MB 77.9 MB
Events in quadrant A3,146,525506,968
Events in quadrant B3,311,865519,809
Events in quadrant C4,044,016501,762
Events in quadrant D3,130,644493,968

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134313
B0137872
C0162132
D0135892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6474290.447946%
B6474420.648749%
C64741291.992586%
D6474480.741427%

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 7700 6475 1 1 0.01% 0.02%
B 7700 6475 2 2 0.03% 0.03%
C 7700 6475 41 41 0.53% 0.63%
D 7700 6475 21 21 0.27% 0.32%

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 9 143 15527 91.2 812 796 161.5
A 0 226 7178 39.51 812 796 161.5
A 12 194 5969 32.03 812 796 161.5
B 4 251 26325 167.02 820 799 152.8
B 3 209 23363 147.64 820 799 152.8
B 0 214 19787 124.24 820 799 152.8
C 3 233 791810 4337.65 793 800 182.4
C 14 238 125434 683.45 793 800 182.4
C 7 247 29901 159.58 793 800 182.4
D 2 33 55063 283.32 796 773 191.6
D 10 70 27390 138.91 796 773 191.6
D 2 234 26024 131.78 796 773 191.6

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