ASTROSAT CZTI

Data Quality Report

Orbit 30786

Creation date: 2024-06-27T20:19:35.832217
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/AS1A10_071T18_9000004448_30786cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30786cztM0_level2_quad_clean.evt
Size (bytes)641,620,80082,428,480
Size611.9 MB 78.6 MB
Events in quadrant A3,210,475539,190
Events in quadrant B5,097,442541,275
Events in quadrant C3,584,731498,682
Events in quadrant D7,109,760472,860

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133483
B0194202
C0144632
D0256912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363140.220022%
B6363560.880088%
C63631702.671696%
D63633475.453402%

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 7568 6364 0 0 0.00% 0.00%
B 7568 6364 8 8 0.11% 0.13%
C 7568 6364 91 91 1.20% 1.43%
D 7568 6363 675 675 8.92% 10.61%

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 13 254 12174 68.88 830 817 164.9
A 3 137 7899 42.95 830 817 164.9
A 0 226 7269 39.13 830 817 164.9
B 6 159 1800666 11581.53 824 806 155.4
B 0 190 19974 123.34 824 806 155.4
B 12 111 18901 116.44 824 806 155.4
C 0 10 326739 1799.95 779 786 181.1
C 14 238 126936 696.61 779 786 181.1
C 3 233 54077 294.28 779 786 181.1
D 8 195 3933607 19298.16 769 756 203.8
D 13 249 98349 478.88 769 756 203.8
D 2 250 85439 415.53 769 756 203.8

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