ASTROSAT CZTI

Data Quality Report

Orbit 36537

Creation date: 2024-06-27T21:28:06.066552
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/AS1A11_089T02_9000005216_36537cztM0_level2.evt modeM0/AS1A11_089T02_9000005216_36537cztM0_level2_quad_clean.evt
Size (bytes)467,737,92092,327,040
Size446.1 MB 88.0 MB
Events in quadrant A2,650,444647,197
Events in quadrant B2,724,725643,925
Events in quadrant C4,222,837579,339
Events in quadrant D4,237,304583,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108172
B0109671
C0156611
D0160461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4867220.452024%
B4867360.739675%
C486757311.773166%
D48672635.403739%

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 6990 4868 14 14 0.20% 0.29%
B 6990 4868 19 19 0.27% 0.39%
C 6990 4868 464 464 6.64% 9.53%
D 6990 4868 252 252 3.61% 5.18%

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 177888 1437.55 619 610 123.3
A 15 223 76729 617.25 619 610 123.3
A 13 254 7395 55.02 619 610 123.3
B 5 172 142335 1235.78 604 590 114.7
B 5 255 57573 496.8 604 590 114.7
B 0 221 38518 330.67 604 590 114.7
C 14 254 1108336 8710.18 556 563 127.2
C 0 10 536430 4213.41 556 563 127.2
C 15 214 198477 1556.16 556 563 127.2
D 12 235 923135 6488.32 588 575 142.2
D 13 249 328842 2308.69 588 575 142.2
D 2 153 199821 1401.29 588 575 142.2

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