ASTROSAT CZTI

Data Quality Report

Orbit 01228

Creation date: 2024-06-27T14:09:26.552651
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/AS1G04_003T01_9000000222_01228cztM0_level2.evt modeM0/AS1G04_003T01_9000000222_01228cztM0_level2_quad_clean.evt
Size (bytes)781,796,16078,580,800
Size745.6 MB 74.9 MB
Events in quadrant A5,821,734513,382
Events in quadrant B6,270,588518,945
Events in quadrant C5,818,217505,233
Events in quadrant D5,434,148492,166

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01053
B01040
C01040
D01051

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021000140
B022284138
C020969123
D019846128

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4982220.441590%
B4982450.903252%
C4983150.301023%
D4985270.541625%

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 5059 4984 156 156 3.08% 3.13%
B 5059 4983 254 254 5.02% 5.10%
C 5059 4985 140 140 2.77% 2.81%
D 5060 4987 201 201 3.97% 4.03%

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 15 127 81601 223.87 1493 1499 357.8
A 11 79 5219 10.4 1493 1499 357.8
A 3 111 4778 9.16 1493 1499 357.8
B 12 52 114428 308.99 1572 1577 365.2
B 15 22 59287 158.01 1572 1577 365.2
B 5 191 53806 143.01 1572 1577 365.2
C 15 241 251843 642.92 1411 1459 389.5
C 3 111 17210 40.44 1411 1459 389.5
C 3 79 15436 35.89 1411 1459 389.5
D 12 22 249110 591.42 1353 1401 418.8
D 10 84 92853 218.35 1353 1401 418.8
D 1 20 9318 18.9 1353 1401 418.8

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