ASTROSAT CZTI

Data Quality Report

Orbit 20200919_A09_038T18_9000003890_level2

Creation date: 2021-01-08T06:26:22.640198
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T18_9000003890cztM0_level2_bc.evt modeM0/AS1A09_038T18_9000003890cztM0_level2_quad_clean.evt
Size (bytes)429,960,960110,923,200
Size410.0 MB 105.8 MB
Events in quadrant A1,967,615770,637
Events in quadrant B6,549,776617,763
Events in quadrant C1,293,533790,661
Events in quadrant D2,784,030749,081

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149420
B0293570
C0125760
D0181640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61632323.764400%
B6163270243.842285%
C6163530.859971%
D61633125.062470%

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 7203 6163 45 45 0.62% 0.73%
B 7203 6163 1807 1807 25.09% 29.32%
C 7203 6163 0 0 0.00% 0.00%
D 7203 6163 32 32 0.44% 0.52%

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 13 681884 9198.49 330 324 74.1
A 13 254 9202 119.82 330 324 74.1
A 8 192 8943 116.32 330 324 74.1
B 0 189 5351362 98543.48 273 268 54.3
B 10 245 111563 2049.56 273 268 54.3
B 3 64 12842 231.56 273 268 54.3
C 15 208 11660 141.58 332 332 80.0
C 2 16 4153 47.76 332 332 80.0
C 13 61 1875 19.28 332 332 80.0
D 1 52 1001181 11552.69 327 318 86.6
D 7 80 337733 3894.69 327 318 86.6
D 2 250 96427 1109.36 327 318 86.6

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