ASTROSAT CZTI

Data Quality Report

Orbit 17181

Creation date: 2024-06-27T17:33:16.206460
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/AS1A05_185T04_9000002548_17181cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17181cztM0_level2_quad_clean.evt
Size (bytes)464,428,80094,294,080
Size442.9 MB 89.9 MB
Events in quadrant A3,095,984622,361
Events in quadrant B3,468,589628,873
Events in quadrant C3,138,379597,420
Events in quadrant D3,940,075572,896

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130842
B0142312
C0131172
D0158223

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6211520.837224%
B62111061.706649%
C6211891.432942%
D62102203.542673%

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 7546 6212 0 0 0.00% 0.00%
B 7546 6211 18 18 0.24% 0.29%
C 7546 6212 0 0 0.00% 0.00%
D 7545 6211 103 103 1.37% 1.66%

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 26766 161.78 797 782 160.6
A 0 226 6953 38.42 797 782 160.6
A 12 96 6263 34.13 797 782 160.6
B 0 189 127481 849.98 799 779 149.1
B 0 219 60414 400.06 799 779 149.1
B 0 197 49069 323.95 799 779 149.1
C 14 238 120425 666.93 770 778 179.4
C 3 233 13654 71.77 770 778 179.4
C 13 61 5439 25.98 770 778 179.4
D 5 222 715958 3856.51 767 746 185.5
D 15 0 143912 771.97 767 746 185.5
D 12 233 82406 440.32 767 746 185.5

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