ASTROSAT CZTI

Data Quality Report

Orbit 27558

Creation date: 2024-06-27T19:41:29.602126
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/AS1C05_019T04_9000003956_27558cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27558cztM0_level2_quad_clean.evt
Size (bytes)544,717,44094,173,120
Size519.5 MB 89.8 MB
Events in quadrant A3,181,440619,265
Events in quadrant B4,062,526607,441
Events in quadrant C3,308,668615,583
Events in quadrant D5,505,382557,882

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137360
B0162990
C0140840
D0209390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6478320.493980%
B64773675.666203%
C6477731.127065%
D64775969.201791%

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 7717 6477 0 0 0.00% 0.00%
B 7717 6477 207 207 2.68% 3.20%
C 7717 6477 1 1 0.01% 0.02%
D 7717 6477 509 509 6.60% 7.86%

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 13 254 10786 61.05 823 807 163.5
A 4 2 7620 41.68 823 807 163.5
A 3 137 7400 40.33 823 807 163.5
B 10 245 894607 5966.46 802 782 149.8
B 12 111 17964 114.69 802 782 149.8
B 11 111 16187 102.83 802 782 149.8
C 14 238 131188 692.8 806 811 188.2
C 2 16 28846 148.97 806 811 188.2
C 15 208 6867 32.18 806 811 188.2
D 1 52 2460752 13501.93 768 749 182.2
D 2 250 51009 275.86 768 749 182.2
D 7 80 38944 209.64 768 749 182.2

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