ASTROSAT CZTI

Data Quality Report

Orbit 19581

Creation date: 2024-06-27T18:04:25.888868
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_104T08_9000002910_19581cztM0_level2.evt modeM0/AS1A05_104T08_9000002910_19581cztM0_level2_quad_clean.evt
Size (bytes)250,346,88039,931,200
Size238.7 MB 38.1 MB
Events in quadrant A1,673,976241,728
Events in quadrant B1,718,218243,481
Events in quadrant C1,865,960229,495
Events in quadrant D2,060,536222,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077191
B077581
C082321
D089491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A384250.130141%
B384230.078084%
C3842441.145237%
D3842761.978136%

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 3842 3842 0 0 0.00% 0.00%
B 3842 3842 0 0 0.00% 0.00%
C 3842 3842 7 7 0.18% 0.18%
D 3842 3842 58 58 1.51% 1.51%

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 6083 63.85 433 423 88.7
A 0 226 3661 36.52 433 423 88.7
A 3 137 3571 35.51 433 423 88.7
B 12 111 10333 117.61 435 425 84.2
B 11 111 8926 100.91 435 425 84.2
B 14 111 7993 89.83 435 425 84.2
C 3 233 176523 1789.37 414 418 98.4
C 14 238 64438 650.5 414 418 98.4
C 9 221 5342 50.03 414 418 98.4
D 1 52 155637 1532.57 413 401 101.3
D 7 238 128519 1264.84 413 401 101.3
D 12 218 122567 1206.08 413 401 101.3

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