ASTROSAT CZTI

Data Quality Report

Orbit 36242

Creation date: 2022-06-13T13:03:24.863861
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/AS1A10_071T34_9000005178_36242cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36242cztM0_level2_quad_clean.evt
Size (bytes)421,439,04076,746,240
Size401.9 MB 73.2 MB
Events in quadrant A2,672,162497,385
Events in quadrant B3,136,391494,446
Events in quadrant C2,814,607488,749
Events in quadrant D3,770,907463,006

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115233
B0128562
C0116342
D0149552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5435140.257590%
B54351041.913523%
C5435390.717571%
D54351653.035879%

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 7138 5436 0 0 0.00% 0.00%
B 7138 5436 66 66 0.92% 1.21%
C 7138 5436 21 21 0.29% 0.39%
D 7138 5436 146 146 2.05% 2.69%

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 10 83 183506 1404.14 639 625 130.2
A 9 143 15830 116.74 639 625 130.2
A 13 254 9407 67.43 639 625 130.2
B 5 236 305977 2505.77 632 615 121.9
B 5 172 187644 1534.74 632 615 121.9
B 0 190 106623 869.89 632 615 121.9
C 15 214 226564 1531.43 623 627 147.5
C 0 10 155115 1047.14 623 627 147.5
C 13 61 4209 24.28 623 627 147.5
D 12 235 466623 3110.45 617 600 149.8
D 12 6 301425 2007.84 617 600 149.8
D 13 171 147668 981.6 617 600 149.8

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