ASTROSAT CZTI

Data Quality Report

Orbit 22754

Creation date: 2024-06-27T18:45:12.873180
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/AS1A08_007T01_9000003362_22754cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22754cztM0_level2_quad_clean.evt
Size (bytes)559,013,760101,727,360
Size533.1 MB 97.0 MB
Events in quadrant A3,275,928689,453
Events in quadrant B3,366,273696,761
Events in quadrant C3,313,506661,648
Events in quadrant D6,567,480613,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133801
B0136901
C0135741
D0238421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6006600.999001%
B6006631.048951%
C60061031.714952%
D600685314.202464%

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 7351 6007 0 0 0.00% 0.00%
B 7351 6007 2 2 0.03% 0.03%
C 7351 6007 0 0 0.00% 0.00%
D 7351 6007 776 776 10.56% 12.92%

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 13 254 10273 56.61 849 832 166.8
A 0 226 7490 39.92 849 832 166.8
A 12 194 6276 32.64 849 832 166.8
B 0 230 31497 202.83 832 816 151.3
B 3 64 24265 155.02 832 816 151.3
B 0 228 21785 138.62 832 816 151.3
C 14 238 129358 691.66 812 819 185.8
C 2 16 11565 57.82 812 819 185.8
C 10 22 6196 28.93 812 819 185.8
D 1 52 2946953 15569.11 793 773 189.2
D 12 227 303287 1598.64 793 773 189.2
D 13 172 130172 683.81 793 773 189.2

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