ASTROSAT CZTI

Data Quality Report

Orbit 04954

Creation date: 2024-06-27T14:49:17.924348
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/AS1G05_157T01_9000000626_04954cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04954cztM0_level2_quad_clean.evt
Size (bytes)573,428,16093,372,480
Size546.9 MB 89.0 MB
Events in quadrant A4,032,948589,477
Events in quadrant B4,256,581578,698
Events in quadrant C3,221,708593,249
Events in quadrant D5,349,339547,205

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170842
B0177511
C0151691
D0210391

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74571081.448304%
B74573134.197398%
C7457150.201153%
D74574946.624648%

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 7622 7459 58 58 0.76% 0.78%
B 7622 7458 166 166 2.18% 2.23%
C 7622 7459 0 0 0.00% 0.00%
D 7621 7458 414 414 5.43% 5.55%

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 13 251 549592 3125.66 851 832 175.6
A 0 50 175948 997.44 851 832 175.6
A 8 15 10047 52.49 851 832 175.6
B 10 16 440516 2693.78 849 829 163.2
B 8 3 368661 2253.56 849 829 163.2
B 5 6 61813 373.62 849 829 163.2
C 12 4 13416 65.71 821 823 191.6
C 13 61 6708 30.71 821 823 191.6
C 14 67 5554 24.69 821 823 191.6
D 2 33 968876 4863.91 800 773 199.0
D 13 235 654976 3286.83 800 773 199.0
D 2 136 256440 1284.51 800 773 199.0

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