ASTROSAT CZTI

Data Quality Report

Orbit 27692

Creation date: 2024-06-27T19:43:11.999084
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_262T01_9000003988_27692cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27692cztM0_level2_quad_clean.evt
Size (bytes)473,091,84096,433,920
Size451.2 MB 92.0 MB
Events in quadrant A3,111,921634,578
Events in quadrant B3,336,520645,285
Events in quadrant C3,280,633616,657
Events in quadrant D4,169,804583,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132420
B0138550
C0135780
D0167550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314270.427621%
B6314701.108647%
C6314821.298701%
D63141872.961672%

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 7544 6314 4 4 0.05% 0.06%
B 7544 6314 7 7 0.09% 0.11%
C 7544 6314 6 6 0.08% 0.10%
D 7544 6314 166 166 2.20% 2.63%

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 6 16 34368 213.7 794 782 157.2
A 8 192 13304 79.67 794 782 157.2
A 13 254 10647 62.77 794 782 157.2
B 0 230 177312 1195.55 797 779 147.7
B 12 111 17702 114.61 797 779 147.7
B 11 111 15910 102.47 797 779 147.7
C 14 238 124887 689.84 772 778 179.9
C 3 233 96275 530.8 772 778 179.9
C 8 208 42486 231.83 772 778 179.9
D 1 52 1119524 6192.86 759 737 180.7
D 2 250 75580 414.28 759 737 180.7
D 11 176 75322 412.85 759 737 180.7

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