ASTROSAT CZTI

Data Quality Report

Orbit 25249

Creation date: 2024-06-27T19:15:30.018021
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/AS1A07_097T01_9000003692_25249cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25249cztM0_level2_quad_clean.evt
Size (bytes)583,200,00078,350,400
Size556.2 MB 74.7 MB
Events in quadrant A3,394,345489,409
Events in quadrant B3,461,346493,210
Events in quadrant C4,604,405465,565
Events in quadrant D5,740,403449,210

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144180
B0146690
C0183020
D0217260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68091071.571450%
B68101532.246696%
C68103465.080764%
D68105417.944200%

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 7424 6811 0 0 0.00% 0.00%
B 7425 6812 1 1 0.01% 0.01%
C 7425 6812 44 44 0.59% 0.65%
D 7425 6812 264 264 3.56% 3.88%

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 3 1 22235 121.5 872 854 176.0
A 13 254 11352 59.66 872 854 176.0
A 11 128 9574 49.55 872 854 176.0
B 0 190 22347 128.44 865 843 167.4
B 12 111 20715 118.7 865 843 167.4
B 11 111 17966 102.28 865 843 167.4
C 7 247 624965 3188.37 825 828 195.8
C 2 16 477484 2434.97 825 828 195.8
C 14 238 130046 660.1 825 828 195.8
D 8 195 708039 3495.75 825 801 202.3
D 1 52 595020 2937.12 825 801 202.3
D 1 239 499431 2464.64 825 801 202.3

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