ASTROSAT CZTI

Data Quality Report

Orbit 41898

Creation date: 2024-06-27T22:34:09.202678
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/AS1A12_099T01_9000005716_41898cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41898cztM0_level2_quad_clean.evt
Size (bytes)403,125,12086,184,000
Size384.5 MB 82.2 MB
Events in quadrant A5,653,309534,546
Events in quadrant B2,568,194606,625
Events in quadrant C3,251,908557,339
Events in quadrant D3,032,088535,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204833
B0113492
C0131142
D0128382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A536261711.506900%
B5362360.671391%
C53622825.259232%
D5362931.734427%

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 7094 5363 599 599 8.44% 11.17%
B 7094 5363 16 16 0.23% 0.30%
C 7094 5363 265 265 3.74% 4.94%
D 7094 5363 98 98 1.38% 1.83%

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 14 24 2934064 25388.45 562 550 115.5
A 10 83 533498 4612.46 562 550 115.5
A 2 79 8433 68.22 562 550 115.5
B 5 255 170598 1521.06 578 561 111.8
B 0 190 63147 559.86 578 561 111.8
B 0 245 32851 288.85 578 561 111.8
C 0 10 789079 6193.18 544 546 127.3
C 15 214 209578 1641.75 544 546 127.3
C 14 254 101412 792.2 544 546 127.3
D 12 6 269093 1942.45 564 547 138.3
D 12 79 116453 838.37 564 547 138.3
D 5 222 105744 760.91 564 547 138.3

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