ASTROSAT CZTI

Data Quality Report

Orbit 42331

Creation date: 2024-06-27T22:39:04.754927
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/AS1C07_001T10_9000005796_42331cztM0_level2.fits modeM0/AS1C07_001T10_9000005796_42331cztM0_level2_quad_clean.evt
Size (bytes)348,773,76084,507,840
Size332.6 MB 80.6 MB
Events in quadrant A3,598,796573,698
Events in quadrant B2,470,007578,349
Events in quadrant C2,351,531568,057
Events in quadrant D4,107,119493,754

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140342
B0108132
C0100812
D0156362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4921390.792522%
B4921420.853485%
C492160.121926%
D49214158.433245%

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 7044 4922 31 31 0.44% 0.63%
B 7044 4922 25 25 0.35% 0.51%
C 7044 4922 2 2 0.03% 0.04%
D 7044 4922 365 365 5.18% 7.42%

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 15 223 902346 8373.87 531 521 107.7
A 10 83 596210 5531.25 531 521 107.7
A 7 3 33797 308.98 531 521 107.7
B 0 229 131797 1291.85 531 517 101.6
B 5 255 57361 559.37 531 517 101.6
B 0 230 53568 522.04 531 517 101.6
C 15 214 207234 1674.97 531 534 123.4
C 15 159 44058 352.69 531 534 123.4
C 15 111 22415 177.31 531 534 123.4
D 1 52 712040 5711.69 512 497 124.6
D 5 32 502582 4030.33 512 497 124.6
D 2 249 278622 2232.56 512 497 124.6

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