ASTROSAT CZTI

Data Quality Report

Orbit 24862

Creation date: 2024-06-27T19:10:43.871035
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_027T02_9000003640_24862cztM0_level2.evt modeM0/AS1A07_027T02_9000003640_24862cztM0_level2_quad_clean.evt
Size (bytes)315,112,32057,775,680
Size300.5 MB 55.1 MB
Events in quadrant A2,436,163372,180
Events in quadrant B2,014,646378,811
Events in quadrant C2,043,183362,051
Events in quadrant D2,772,971350,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098431
B084951
C085361
D0110516

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40561393.427022%
B4056491.208087%
C4056711.750493%
D4055882.170160%

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 4991 4057 38 38 0.76% 0.94%
B 4991 4057 2 2 0.04% 0.05%
C 4991 4057 3 3 0.06% 0.07%
D 4990 4056 47 47 0.94% 1.16%

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 6 16 471995 4639.46 504 492 101.6
A 15 223 15628 148.93 504 492 101.6
A 13 254 5537 49.64 504 492 101.6
B 4 80 16650 163.53 502 489 98.8
B 7 202 12251 119.02 502 489 98.8
B 12 111 11922 115.69 502 489 98.8
C 14 238 78142 678.5 486 490 114.4
C 2 16 60391 523.39 486 490 114.4
C 7 220 5617 44.8 486 490 114.4
D 12 218 475113 3923.7 492 478 121.0
D 1 52 388897 3210.97 492 478 121.0
D 8 195 35596 290.31 492 478 121.0

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