ASTROSAT CZTI

Data Quality Report

Orbit 36194

Creation date: 2022-06-09T06:25:20.863219
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_097T17_9000005170_36194cztM0_level2.evt modeM0/AS1A11_097T17_9000005170_36194cztM0_level2_quad_clean.evt
Size (bytes)800,412,48071,634,240
Size763.3 MB 68.3 MB
Events in quadrant A3,046,598480,445
Events in quadrant B3,056,904489,220
Events in quadrant C13,375,492313,543
Events in quadrant D4,335,095444,382

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130483
B0131862
C0440462
D0170972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6302220.349096%
B6302200.317360%
C6302426067.597588%
D63023395.379245%

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 8958 6304 8 8 0.09% 0.13%
B 8958 6304 8 8 0.09% 0.13%
C 8957 6302 3795 3795 42.37% 60.22%
D 8958 6304 268 268 2.99% 4.25%

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 186986 1282.34 720 704 145.3
A 9 143 55928 380.15 720 704 145.3
A 8 144 11518 74.44 720 704 145.3
B 5 172 157528 1120.81 718 697 139.9
B 4 232 22638 156.8 718 697 139.9
B 5 236 19372 133.46 718 697 139.9
C 4 254 11266572 110522.51 435 437 101.9
C 15 208 180441 1765.87 435 437 101.9
C 15 214 180059 1762.12 435 437 101.9
D 2 250 639985 3863.96 686 669 165.5
D 12 6 462433 2790.85 686 669 165.5
D 12 233 197780 1191.32 686 669 165.5

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