ASTROSAT CZTI

Data Quality Report

Orbit 22725

Creation date: 2024-06-27T18:44:52.278252
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_22725cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22725cztM0_level2_quad_clean.evt
Size (bytes)522,630,72084,504,960
Size498.4 MB 80.6 MB
Events in quadrant A3,205,924569,827
Events in quadrant B3,289,454575,186
Events in quadrant C3,260,626540,944
Events in quadrant D5,671,155459,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130591
B0132831
C0131911
D0207541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5904771.304201%
B5905841.422523%
C59051181.998307%
D590593915.901778%

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 7249 5905 0 0 0.00% 0.00%
B 7250 5906 0 0 0.00% 0.00%
C 7250 5906 1 1 0.01% 0.02%
D 7250 5906 729 729 10.06% 12.34%

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 10 17 20745 122.42 824 808 162.9
A 13 254 10787 61.27 824 808 162.9
A 0 226 7452 40.79 824 808 162.9
B 0 228 34847 227.75 812 796 149.5
B 0 190 31208 203.41 812 796 149.5
B 0 197 21967 141.6 812 796 149.5
C 14 238 125975 699.67 783 792 178.9
C 0 207 38032 208.14 783 792 178.9
C 10 91 35809 195.72 783 792 178.9
D 1 52 2453454 14206.91 730 711 172.6
D 12 227 362348 2094.69 730 711 172.6
D 12 233 26362 148.58 730 711 172.6

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