ASTROSAT CZTI

Data Quality Report

Orbit 30581

Creation date: 2024-06-27T20:17:16.034879
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_103T02_9000004406_30581cztM0_level2.evt modeM0/AS1A10_103T02_9000004406_30581cztM0_level2_quad_clean.evt
Size (bytes)525,778,56094,628,160
Size501.4 MB 90.2 MB
Events in quadrant A3,329,709623,658
Events in quadrant B4,878,390625,327
Events in quadrant C3,507,320592,060
Events in quadrant D3,779,867583,916

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137811
B0191951
C0142881
D0152741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314841.330377%
B6315540.855107%
C63152714.291370%
D63151302.058591%

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 7374 6315 49 49 0.66% 0.78%
B 7375 6316 3 3 0.04% 0.05%
C 7375 6316 47 47 0.64% 0.74%
D 7375 6316 104 104 1.41% 1.65%

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 286557 1817.46 785 770 157.2
A 13 254 11725 69.67 785 770 157.2
A 8 192 11097 65.67 785 770 157.2
B 6 159 1721692 11632.9 778 758 147.9
B 0 229 41301 274.06 778 758 147.9
B 15 36 39873 264.4 778 758 147.9
C 14 238 167173 945.95 753 759 175.9
C 0 10 159805 904.07 753 759 175.9
C 3 233 129397 731.22 753 759 175.9
D 1 52 421909 2335.8 763 743 180.3
D 5 222 139323 768.57 763 743 180.3
D 13 249 113356 624.55 763 743 180.3

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