ASTROSAT CZTI

Data Quality Report

Orbit 32736

Creation date: 2024-06-27T20:41:24.337433
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/AS1A10_123T04_9000004726_32736cztM0_level2.evt modeM0/AS1A10_123T04_9000004726_32736cztM0_level2_quad_clean.evt
Size (bytes)326,113,92047,105,280
Size311.0 MB 44.9 MB
Events in quadrant A1,857,518291,092
Events in quadrant B2,570,340277,649
Events in quadrant C1,921,325290,181
Events in quadrant D3,246,223276,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083552
B0102551
C085181
D0125741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A411450.121536%
B41141994.837141%
C4114190.461838%
D41141443.500243%

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 4114 4114 4 4 0.10% 0.10%
B 4114 4114 184 184 4.47% 4.47%
C 4114 4114 14 14 0.34% 0.34%
D 4114 4114 116 116 2.82% 2.82%

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 15 237 35220 366.07 466 456 95.0
A 15 249 11397 115.21 466 456 95.0
A 13 254 7865 78.01 466 456 95.0
B 3 26 632954 7109.82 462 450 89.0
B 0 199 23235 256.12 462 450 89.0
B 0 219 23036 253.88 462 450 89.0
C 0 10 50071 460.45 455 460 107.7
C 9 54 26067 237.67 455 460 107.7
C 7 247 19096 172.97 455 460 107.7
D 2 250 372554 3438.52 448 437 108.2
D 8 195 324065 2990.46 448 437 108.2
D 7 80 191902 1769.22 448 437 108.2

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