ASTROSAT CZTI

Data Quality Report

Orbit 24480

Creation date: 2024-06-27T19:06:25.844814
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_183T01_9000003606_24480cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24480cztM0_level2_quad_clean.evt
Size (bytes)994,020,480213,459,840
Size948.0 MB 203.6 MB
Events in quadrant A7,403,2811,429,401
Events in quadrant B6,106,1321,478,385
Events in quadrant C6,354,8341,382,085
Events in quadrant D9,394,5761,310,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304193
B0262793
C0269363
D0364943

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125163412.724513%
B12516700.559284%
C125162481.981464%
D125165874.689997%

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 14096 12518 148 148 1.05% 1.18%
B 14096 12518 22 22 0.16% 0.18%
C 14096 12518 111 111 0.79% 0.89%
D 14096 12518 543 543 3.85% 4.34%

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 14 111 1713205 5880.7 1464 1435 291.1
A 4 2 42321 140.46 1464 1435 291.1
A 13 254 19860 63.3 1464 1435 291.1
B 3 64 104905 374.93 1481 1444 275.9
B 0 190 88252 314.58 1481 1444 275.9
B 12 17 47308 166.21 1481 1444 275.9
C 2 16 521347 1595.95 1414 1420 325.8
C 14 238 228978 698.51 1414 1420 325.8
C 0 10 52600 157.1 1414 1420 325.8
D 8 195 1782547 5316.09 1395 1355 335.1
D 12 218 1403843 4185.82 1395 1355 335.1
D 1 52 896555 2671.79 1395 1355 335.1

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