ASTROSAT CZTI

Data Quality Report

Orbit 37148

Creation date: 2024-06-27T21:36:12.056796
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/AS1A11_079T01_9000005284_37148cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37148cztM0_level2_quad_clean.evt
Size (bytes)476,248,32065,053,440
Size454.2 MB 62.0 MB
Events in quadrant A2,781,134414,980
Events in quadrant B3,895,113382,231
Events in quadrant C3,127,101405,164
Events in quadrant D4,246,604382,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118733
B0152972
C0125212
D0163422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5501240.436284%
B55014187.598618%
C5501901.636066%
D55011873.399382%

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 7053 5502 16 16 0.23% 0.29%
B 7053 5502 365 365 5.18% 6.63%
C 7053 5502 62 62 0.88% 1.13%
D 7053 5502 243 243 3.45% 4.42%

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 265443 2095.37 627 615 126.4
A 13 248 35230 273.88 627 615 126.4
A 15 174 18998 145.45 627 615 126.4
B 0 182 757490 6507.94 598 580 116.3
B 5 172 505352 4340.05 598 580 116.3
B 5 255 200591 1719.7 598 580 116.3
C 0 10 300723 2107.18 607 612 142.4
C 15 214 251142 1759.05 607 612 142.4
C 0 207 131940 922.1 607 612 142.4
D 12 235 1065151 7273.97 604 590 146.4
D 2 249 478977 3268.74 604 590 146.4
D 12 233 209773 1429.31 604 590 146.4

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