ASTROSAT CZTI

Data Quality Report

Orbit 00688

Creation date: 2024-06-27T14:01:35.022598
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_00688cztM0_level2.evt modeM0/AS1P01_147T02_9000000098_00688cztM0_level2_quad_clean.evt
Size (bytes)1,469,093,76069,811,200
Size1.4 GB 66.6 MB
Events in quadrant A7,838,302442,523
Events in quadrant B8,376,040445,304
Events in quadrant C19,487,902353,230
Events in quadrant D8,355,648411,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280511
B0295615
C0632482
D0295571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66311071.613633%
B6630290.437406%
C6607428164.794914%
D6494981.509085%

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 7381 6632 239 239 3.24% 3.60%
B 7380 6631 231 231 3.13% 3.48%
C 7380 6609 6493 6493 87.98% 98.24%
D 7380 6495 343 343 4.65% 5.28%

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 15 143 229906 478.25 1969 1981 476.6
A 13 17 41481 82.88 1969 1981 476.6
A 11 79 8095 12.83 1969 1981 476.6
B 7 221 172938 348.41 2068 2078 490.4
B 0 137 151577 304.85 2068 2078 490.4
B 0 220 63879 126.02 2068 2078 490.4
C 3 191 10214590 21226.6 1721 1786 481.1
C 3 127 976377 2025.62 1721 1786 481.1
C 3 95 347514 718.57 1721 1786 481.1
D 0 25 877681 1572.47 1806 1875 557.0
D 14 52 402714 719.69 1806 1875 557.0
D 1 4 154225 273.54 1806 1875 557.0

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