ASTROSAT CZTI

Data Quality Report

Orbit 00619

Creation date: 2024-06-27T14:00:39.667825
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/AS1P01_116T01_9000000086_00619cztM0_level2.evt modeM0/AS1P01_116T01_9000000086_00619cztM0_level2_quad_clean.evt
Size (bytes)792,550,08070,608,960
Size755.8 MB 67.3 MB
Events in quadrant A6,044,608447,114
Events in quadrant B6,243,585452,844
Events in quadrant C5,977,772436,062
Events in quadrant D5,379,833427,544

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217633
B0223722
C0216312
D0197932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534440.074850%
B5344110.205838%
C53441021.908683%
D5344240.449102%

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 7500 5345 79 79 1.05% 1.48%
B 7500 5345 88 88 1.17% 1.65%
C 7500 5345 188 188 2.51% 3.52%
D 7500 5345 71 71 0.95% 1.33%

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 13 160 67476 191.73 1533 1511 344.0
A 0 238 27963 76.88 1533 1511 344.0
A 0 69 6789 15.34 1533 1511 344.0
B 0 220 69223 182.96 1572 1580 369.7
B 7 221 67499 178.3 1572 1580 369.7
B 5 191 39131 101.57 1572 1580 369.7
C 9 83 388053 981.11 1416 1473 394.0
C 15 241 16999 39.4 1416 1473 394.0
C 7 159 11963 26.62 1416 1473 394.0
D 1 4 119516 282.22 1333 1388 418.6
D 13 221 42751 98.82 1333 1388 418.6
D 13 252 33706 77.21 1333 1388 418.6

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