ASTROSAT CZTI

Data Quality Report

Orbit 04360

Creation date: 2024-06-27T14:40:52.472136
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/AS1G05_219T01_9000000540_04360cztM0_level2.evt modeM0/AS1G05_219T01_9000000540_04360cztM0_level2_quad_clean.evt
Size (bytes)361,365,12035,141,760
Size344.6 MB 33.5 MB
Events in quadrant A3,498,426195,296
Events in quadrant B2,066,884196,685
Events in quadrant C2,984,306190,941
Events in quadrant D2,113,973190,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132001
B088931
C0118261
D092691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411050112.189781%
B4110962.335766%
C41102646.423358%
D4110962.335766%

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 4935 4110 362 362 7.34% 8.81%
B 4935 4110 2 2 0.04% 0.05%
C 4934 4109 186 186 3.77% 4.53%
D 4935 4110 26 26 0.53% 0.63%

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 0 13 1412488 13981.07 483 473 101.0
A 13 251 143521 1416.39 483 473 101.0
A 15 234 25505 247.85 483 473 101.0
B 14 167 37153 366.32 506 493 100.1
B 4 48 26060 255.48 506 493 100.1
B 15 204 18749 182.42 506 493 100.1
C 9 247 1106262 9801.36 477 481 112.8
C 12 4 5875 47.81 477 481 112.8
C 9 16 4722 37.59 477 481 112.8
D 2 136 106276 892.14 481 467 118.6
D 13 223 61012 510.49 481 467 118.6
D 4 95 38530 320.93 481 467 118.6

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