ASTROSAT CZTI

Data Quality Report

Orbit 18767

Creation date: 2024-06-27T17:54:35.131915
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_115T03_9000002806_18767cztM0_level2.evt modeM0/AS1A05_115T03_9000002806_18767cztM0_level2_quad_clean.evt
Size (bytes)1,310,541,120247,631,040
Size1.2 GB 236.2 MB
Events in quadrant A9,329,9021,547,943
Events in quadrant B9,443,7431,570,107
Events in quadrant C10,101,9221,522,709
Events in quadrant D9,486,8301,507,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407494
B0409674
C0428444
D0417264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196242241.141459%
B196253391.727389%
C196254182.129936%
D196252001.019108%

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 21734 19628 3 3 0.01% 0.02%
B 21735 19629 0 0 0.00% 0.00%
C 21735 19629 25 25 0.12% 0.13%
D 21735 19629 21 21 0.10% 0.11%

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 84544 170.94 2376 2318 481.0
A 15 192 36591 71.25 2376 2318 481.0
A 13 254 28107 53.61 2376 2318 481.0
B 10 245 104167 222.94 2366 2305 456.9
B 12 111 57774 121.4 2366 2305 456.9
B 0 229 52630 110.14 2366 2305 456.9
C 3 233 812239 1508.3 2283 2297 537.0
C 14 238 349659 646.87 2283 2297 537.0
C 6 96 20751 34.37 2283 2297 537.0
D 7 223 243294 428.74 2314 2248 562.2
D 12 110 234923 413.85 2314 2248 562.2
D 7 96 120320 210.01 2314 2248 562.2

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