ASTROSAT CZTI

Data Quality Report

Orbit 10912

Creation date: 2024-06-27T16:05:32.360924
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/AS1A04_055T02_9000001576_10912cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10912cztM0_level2_quad_clean.evt
Size (bytes)508,417,92095,428,800
Size484.9 MB 91.0 MB
Events in quadrant A3,675,782626,162
Events in quadrant B4,919,156620,135
Events in quadrant C3,054,961622,021
Events in quadrant D3,329,449591,179

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148892
B0188801
C0130461
D0137931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61651081.751825%
B61654316.991079%
C6165470.762368%
D61651041.686942%

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 7415 6166 21 21 0.28% 0.34%
B 7415 6166 213 213 2.87% 3.45%
C 7415 6166 0 0 0.00% 0.00%
D 7415 6166 44 44 0.59% 0.71%

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 507569 3074.01 816 801 164.9
A 15 223 9147 50.63 816 801 164.9
A 0 226 7706 41.89 816 801 164.9
B 4 239 1692605 11341.88 796 780 149.2
B 0 214 52902 349.42 796 780 149.2
B 10 245 30579 199.77 796 780 149.2
C 13 61 5773 27.93 782 790 178.4
C 5 207 2210 7.96 782 790 178.4
C 8 222 2191 7.85 782 790 178.4
D 5 97 137424 735.22 786 764 185.9
D 10 253 43770 231.37 786 764 185.9
D 13 104 41106 217.04 786 764 185.9

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