ASTROSAT CZTI

Data Quality Report

Orbit 27228

Creation date: 2024-06-27T19:37:56.810230
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/AS1T03_243T01_9000003918_27228cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27228cztM0_level2_quad_clean.evt
Size (bytes)515,724,480101,174,400
Size491.8 MB 96.5 MB
Events in quadrant A3,548,878684,788
Events in quadrant B3,449,277697,413
Events in quadrant C3,300,081645,858
Events in quadrant D4,895,867598,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144860
B0141940
C0136150
D0187220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258961.534036%
B62581061.693832%
C62591251.997124%
D62594437.077808%

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 7593 6259 3 3 0.04% 0.05%
B 7593 6259 4 4 0.05% 0.06%
C 7594 6260 7 7 0.09% 0.11%
D 7594 6260 351 351 4.62% 5.61%

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 13 181976 1063.99 856 842 170.2
A 13 248 34583 198.2 856 842 170.2
A 14 235 19265 108.22 856 842 170.2
B 15 33 45809 284.56 846 827 158.1
B 0 245 27419 168.22 846 827 158.1
B 5 172 26808 164.36 846 827 158.1
C 14 238 131371 702.09 800 807 186.0
C 15 208 37575 197.71 800 807 186.0
C 1 16 7620 36.64 800 807 186.0
D 1 52 1171503 6004.89 784 768 195.0
D 2 250 368287 1885.06 784 768 195.0
D 5 222 221476 1132.05 784 768 195.0

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