ASTROSAT CZTI

Data Quality Report

Orbit 10795

Creation date: 2024-06-27T16:03:59.621657
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/AS1A03_071T01_9000001562_10795cztM0_level2.evt modeM0/AS1A03_071T01_9000001562_10795cztM0_level2_quad_clean.evt
Size (bytes)508,144,32067,956,480
Size484.6 MB 64.8 MB
Events in quadrant A3,242,964402,273
Events in quadrant B4,375,520402,361
Events in quadrant C3,115,199409,338
Events in quadrant D4,211,490387,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138493
B0173472
C0135082
D0168142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6540841.284404%
B65403395.183486%
C6540671.024465%
D65401692.584098%

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 7665 6540 2 2 0.03% 0.03%
B 7665 6540 147 147 1.92% 2.25%
C 7665 6541 1 1 0.01% 0.02%
D 7665 6540 80 80 1.04% 1.22%

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 8 15 26273 154.38 824 808 164.9
A 13 248 17987 104.15 824 808 164.9
A 15 174 10551 59.06 824 808 164.9
B 4 239 979459 6426.51 810 792 152.3
B 0 219 111379 726.18 810 792 152.3
B 0 214 41351 266.33 810 792 152.3
C 14 234 9463 47.65 794 799 181.8
C 13 61 5905 28.08 794 799 181.8
C 8 222 3139 12.87 794 799 181.8
D 8 195 415374 2197.78 789 767 188.6
D 13 138 263825 1394.44 789 767 188.6
D 10 253 183193 967.02 789 767 188.6

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