ASTROSAT CZTI

Data Quality Report

Orbit 46835

Creation date: 2024-06-27T23:28:16.137625
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/AS1A13_053T01_9000006274_46835cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46835cztM0_level2_quad_clean.evt
Size (bytes)513,112,320101,764,800
Size489.3 MB 97.1 MB
Events in quadrant A6,881,840655,007
Events in quadrant B3,364,857717,263
Events in quadrant C2,857,830692,213
Events in quadrant D5,403,595579,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246121
B0140101
C0130321
D0203371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62596149.809874%
B62591131.805400%
C6260470.750799%
D626076112.156550%

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 7394 6260 404 404 5.46% 6.45%
B 7394 6260 24 24 0.32% 0.38%
C 7395 6261 11 11 0.15% 0.18%
D 7395 6261 608 608 8.22% 9.71%

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 10 83 3175205 22073.61 694 678 143.8
A 9 191 1011868 7031.16 694 678 143.8
A 13 248 11279 73.71 694 678 143.8
B 3 112 337232 2468.07 700 679 136.4
B 15 36 102656 747.84 700 679 136.4
B 5 171 37428 269.49 700 679 136.4
C 1 241 147390 907.88 687 690 161.6
C 14 254 14217 83.71 687 690 161.6
C 0 207 11002 63.82 687 690 161.6
D 1 52 1823297 10998.41 660 641 165.7
D 13 249 608624 3668.74 660 641 165.7
D 10 181 277050 1667.93 660 641 165.7

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