ASTROSAT CZTI

Data Quality Report

Orbit 26077

Creation date: 2024-06-27T19:24:33.938846
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/AS1A09_113T01_9000003768_26077cztM0_level2.evt modeM0/AS1A09_113T01_9000003768_26077cztM0_level2_quad_clean.evt
Size (bytes)850,322,880179,167,680
Size810.9 MB 170.9 MB
Events in quadrant A5,924,5341,160,990
Events in quadrant B6,154,6961,166,337
Events in quadrant C5,953,8051,113,362
Events in quadrant D6,854,9811,104,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259970
B0265970
C0260360
D0291530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12756170.133271%
B12756430.337096%
C12756870.682032%
D127552742.148177%

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 14136 12758 0 0 0.00% 0.00%
B 14136 12756 2 2 0.01% 0.02%
C 14136 12757 0 0 0.00% 0.00%
D 14135 12757 244 244 1.73% 1.91%

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 32408 101.04 1527 1497 305.9
A 13 254 21554 65.56 1527 1497 305.9
A 3 137 14381 42.11 1527 1497 305.9
B 15 33 93865 317.6 1521 1483 290.9
B 0 190 44365 147.42 1521 1483 290.9
B 12 111 35929 118.42 1521 1483 290.9
C 14 238 231599 676.48 1449 1456 340.2
C 3 233 41602 118.0 1449 1456 340.2
C 2 16 18105 48.94 1449 1456 340.2
D 1 52 925359 2564.89 1454 1418 360.2
D 12 233 217378 599.51 1454 1418 360.2
D 9 35 80464 219.43 1454 1418 360.2

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