ASTROSAT CZTI

Data Quality Report

Orbit 36014

Creation date: 2022-08-09T18:56:47.603981
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/AS1T04_069T01_9000005158_36014cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36014cztM0_level2_quad_clean.evt
Size (bytes)497,926,08049,619,520
Size474.9 MB 47.3 MB
Events in quadrant A2,778,222289,762
Events in quadrant B2,907,206296,067
Events in quadrant C4,135,043284,262
Events in quadrant D4,900,992261,288

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111863
B0116952
C0155142
D0183992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529170.132300%
B5291250.472500%
C52913075.802306%
D52912634.970705%

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 7325 5292 0 0 0.00% 0.00%
B 7325 5292 12 12 0.16% 0.23%
C 7325 5292 271 271 3.70% 5.12%
D 7325 5292 224 224 3.06% 4.23%

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 164695 1226.84 668 657 133.7
A 2 247 16994 122.18 668 657 133.7
A 13 6 8988 62.31 668 657 133.7
B 5 172 96100 755.75 670 654 126.3
B 4 171 62305 488.16 670 654 126.3
B 0 182 28116 217.44 670 654 126.3
C 9 187 1222935 8318.55 645 652 146.9
C 15 214 219417 1488.86 645 652 146.9
C 0 10 173595 1177.01 645 652 146.9
D 12 227 1218216 7775.58 640 625 156.6
D 12 235 435835 2779.27 640 625 156.6
D 12 6 353020 2250.41 640 625 156.6

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