ASTROSAT CZTI

Data Quality Report

Orbit 09961

Creation date: 2024-06-27T15:53:02.304484
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/AS1G07_047T01_9000001424_09961cztM0_level2.evt modeM0/AS1G07_047T01_9000001424_09961cztM0_level2_quad_clean.evt
Size (bytes)513,207,36083,871,360
Size489.4 MB 80.0 MB
Events in quadrant A3,247,495510,440
Events in quadrant B3,615,514521,914
Events in quadrant C3,167,099522,428
Events in quadrant D5,024,017483,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147643
B0155822
C0146212
D0198312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7195300.416956%
B7195941.306463%
C7195190.264072%
D71952813.905490%

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 7890 7196 7 7 0.09% 0.10%
B 7890 7196 26 26 0.33% 0.36%
C 7890 7195 0 0 0.00% 0.00%
D 7890 7195 183 183 2.32% 2.54%

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 15 239 17796 99.89 828 810 170.0
A 15 174 17564 98.53 828 810 170.0
A 14 111 9965 53.84 828 810 170.0
B 4 81 120966 741.56 838 815 162.0
B 4 239 88016 538.19 838 815 162.0
B 0 214 53590 325.72 838 815 162.0
C 13 61 6072 27.81 810 813 189.1
C 14 67 4444 19.2 810 813 189.1
C 8 222 2738 10.18 810 813 189.1
D 1 52 665843 3245.55 788 771 204.9
D 8 195 359609 1751.13 788 771 204.9
D 2 152 283634 1380.37 788 771 204.9

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