ASTROSAT CZTI

Data Quality Report

Orbit 34857

Creation date: 2022-03-10T07:44:33.925331
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_005T01_9000004992_34857cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34857cztM0_level2_quad_clean.evt
Size (bytes)718,441,92074,776,320
Size685.2 MB 71.3 MB
Events in quadrant A7,036,348484,117
Events in quadrant B6,226,554447,359
Events in quadrant C3,359,072511,298
Events in quadrant D4,802,834473,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243863
B0216842
C0128922
D0176652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495986017.342206%
B4959165733.413995%
C49592004.033071%
D49593507.057875%

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 7082 4960 714 714 10.08% 14.40%
B 7081 4958 1551 1551 21.90% 31.28%
C 7082 4960 169 169 2.39% 3.41%
D 7082 4960 328 328 4.63% 6.61%

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 15 169 4702876 41009.34 585 574 114.7
A 10 83 44815 385.83 585 574 114.7
A 13 6 8805 71.78 585 574 114.7
B 5 31 1289765 13279.45 521 510 97.1
B 5 15 1282763 13207.33 521 510 97.1
B 5 14 1032556 10630.17 521 510 97.1
C 0 207 465728 3402.14 601 608 136.7
C 0 10 272441 1988.33 601 608 136.7
C 15 214 222264 1621.31 601 608 136.7
D 12 227 1592459 11123.32 598 582 143.1
D 8 195 407642 2844.35 598 582 143.1
D 13 249 198350 1381.91 598 582 143.1

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