ASTROSAT CZTI

Data Quality Report

Orbit 03261

Creation date: 2024-06-27T14:26:51.680367
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/AS1G05_221T01_9000000442_03261cztM0_level2.evt modeM0/AS1G05_221T01_9000000442_03261cztM0_level2_quad_clean.evt
Size (bytes)780,793,92087,710,400
Size744.6 MB 83.6 MB
Events in quadrant A4,034,888539,804
Events in quadrant B4,899,198540,846
Events in quadrant C9,112,523476,947
Events in quadrant D5,036,711519,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179402
B0198431
C0328151
D0209311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83204715.661058%
B83204485.384615%
C8320180621.706731%
D83205816.983173%

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 8675 8323 37 37 0.43% 0.44%
B 8675 8323 0 0 0.00% 0.00%
C 8675 8323 1346 1346 15.52% 16.17%
D 8675 8323 185 185 2.13% 2.22%

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 0 50 103186 494.94 997 970 206.5
A 0 118 58708 279.57 997 970 206.5
A 0 226 16246 73.97 997 970 206.5
B 15 204 957793 4858.98 1011 984 196.9
B 2 249 14475 68.51 1011 984 196.9
B 5 200 14285 67.55 1011 984 196.9
C 1 192 4662277 21790.57 913 913 213.9
C 14 223 674421 3148.46 913 913 213.9
C 12 175 130506 605.81 913 913 213.9
D 12 233 945574 4085.88 965 936 231.2
D 13 223 114213 489.96 965 936 231.2
D 13 114 88160 377.27 965 936 231.2

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