ASTROSAT CZTI

Data Quality Report

Orbit 00693

Creation date: 2024-06-27T14:01:38.949138
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_147T02_9000000098_00693cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00693cztM0_level2_quad_clean.evt
Size (bytes)1,072,241,28071,040,960
Size1022.6 MB 67.7 MB
Events in quadrant A7,226,118433,089
Events in quadrant B7,798,769441,871
Events in quadrant C9,398,912422,975
Events in quadrant D7,629,835410,832

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259772
B0276542
C0323272
D0272006

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A633270.110550%
B6333150.236855%
C6333250.394758%
D6332220.347442%

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 7542 6333 145 145 1.92% 2.29%
B 7543 6334 202 202 2.68% 3.19%
C 7543 6334 351 351 4.65% 5.54%
D 7542 6333 497 497 6.59% 7.85%

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 12 133 55722 120.56 1866 1879 446.6
A 11 79 9060 16.08 1866 1879 446.6
A 3 111 5968 9.16 1866 1879 446.6
B 5 247 103432 219.6 1977 1985 462.0
B 0 220 70966 149.32 1977 1985 462.0
B 7 221 50441 104.89 1977 1985 462.0
C 3 127 1028185 2029.68 1821 1887 505.6
C 3 31 260689 511.83 1821 1887 505.6
C 3 15 240748 472.39 1821 1887 505.6
D 13 72 836295 1558.66 1743 1807 535.4
D 0 25 171683 317.29 1743 1807 535.4
D 1 4 56334 101.84 1743 1807 535.4

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