ASTROSAT CZTI

Data Quality Report

Orbit 14836

Creation date: 2024-06-27T17:00:11.998747
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/AS1C03_005T02_9000002192_14836cztM0_level2.evt modeM0/AS1C03_005T02_9000002192_14836cztM0_level2_quad_clean.evt
Size (bytes)472,798,080111,810,240
Size450.9 MB 106.6 MB
Events in quadrant A3,235,529751,955
Events in quadrant B3,481,311750,002
Events in quadrant C3,350,231736,028
Events in quadrant D3,828,658713,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133552
B0142161
C0136971
D0153321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226631.011886%
B6226841.349181%
C6226340.546097%
D6226981.574044%

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 7567 6228 2 2 0.03% 0.03%
B 7567 6228 16 16 0.21% 0.26%
C 7567 6228 0 0 0.00% 0.00%
D 7567 6228 32 32 0.42% 0.51%

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 12 189 37459 224.56 823 806 163.2
A 9 143 24599 145.77 823 806 163.2
A 0 226 7434 40.61 823 806 163.2
B 3 64 103790 695.46 806 789 148.1
B 0 229 47975 318.6 806 789 148.1
B 0 189 47179 313.22 806 789 148.1
C 3 233 283557 1588.72 784 791 178.0
C 13 61 5728 27.74 784 791 178.0
C 8 128 4883 22.99 784 791 178.0
D 13 104 315464 1519.27 790 774 207.1
D 12 110 239338 1151.75 790 774 207.1
D 13 249 96005 459.76 790 774 207.1

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