ASTROSAT CZTI

Data Quality Report

Orbit 30852

Creation date: 2024-06-27T20:20:23.831163
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/AS1A10_071T46_9000004460_30852cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30852cztM0_level2_quad_clean.evt
Size (bytes)418,495,68042,485,760
Size399.1 MB 40.5 MB
Events in quadrant A1,994,739262,828
Events in quadrant B5,872,739244,890
Events in quadrant C2,116,591250,719
Events in quadrant D2,421,229248,158

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082941
B0202271
C086381
D096691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3960942.373737%
B3960105126.540404%
C39601644.141414%
D3960862.171717%

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 4290 3961 0 0 0.00% 0.00%
B 4290 3960 233 233 5.43% 5.88%
C 4290 3961 5 5 0.12% 0.13%
D 4290 3960 10 10 0.23% 0.25%

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 13 254 7237 62.74 517 504 107.3
A 3 137 5479 46.36 517 504 107.3
A 0 226 4377 36.09 517 504 107.3
B 6 36 2836639 29582.52 484 472 95.9
B 6 159 1089074 11354.62 484 472 95.9
B 0 230 24011 245.52 484 472 95.9
C 0 10 86870 733.84 489 491 117.7
C 14 238 77626 655.31 489 491 117.7
C 3 233 25320 210.94 489 491 117.7
D 8 195 457161 3838.63 497 484 119.0
D 2 250 45268 376.43 497 484 119.0
D 2 234 15221 123.87 497 484 119.0

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