ASTROSAT CZTI

Data Quality Report

Orbit 20496

Creation date: 2024-06-27T18:16:03.052039
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/AS1A05_115T01_9000003030_20496cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20496cztM0_level2_quad_clean.evt
Size (bytes)566,674,56091,874,880
Size540.4 MB 87.6 MB
Events in quadrant A3,080,594609,381
Events in quadrant B3,456,586627,257
Events in quadrant C3,645,838585,237
Events in quadrant D6,563,040531,206

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128622
B0140002
C0147112
D0239113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6150210.341463%
B6150861.398374%
C6150621.008130%
D61494687.610994%

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 7560 6150 0 0 0.00% 0.00%
B 7560 6150 12 12 0.16% 0.20%
C 7560 6150 0 0 0.00% 0.00%
D 7559 6150 496 496 6.56% 8.07%

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 0 226 7130 39.67 797 783 160.0
A 13 254 6639 36.6 797 783 160.0
A 11 29 6605 36.39 797 783 160.0
B 0 197 70165 461.91 805 788 150.2
B 7 220 70015 460.92 805 788 150.2
B 0 189 47998 314.33 805 788 150.2
C 3 233 521742 2916.77 768 774 178.6
C 14 238 123105 684.9 768 774 178.6
C 0 2 9720 50.09 768 774 178.6
D 7 238 1260895 6895.12 750 729 182.8
D 7 38 795310 4347.63 750 729 182.8
D 2 16 791040 4324.26 750 729 182.8

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