ASTROSAT CZTI

Data Quality Report

Orbit 14658

Creation date: 2024-06-27T16:58:06.042431
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/AS1G08_019T01_9000002166_14658cztM0_level2.evt modeM0/AS1G08_019T01_9000002166_14658cztM0_level2_quad_clean.evt
Size (bytes)302,791,68032,244,480
Size288.8 MB 30.8 MB
Events in quadrant A2,070,862185,203
Events in quadrant B1,784,972183,692
Events in quadrant C2,939,641175,580
Events in quadrant D2,131,586178,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082851
B074811
C0113691
D085521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3571290.812097%
B3571250.700084%
C3571401.120134%
D3571260.728087%

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 3572 3572 0 0 0.00% 0.00%
B 3572 3572 1 1 0.03% 0.03%
C 3572 3572 0 0 0.00% 0.00%
D 3572 3572 22 22 0.62% 0.62%

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 0 23 233806 2537.44 449 440 92.0
A 1 162 34344 368.65 449 440 92.0
A 12 189 23503 250.77 449 440 92.0
B 0 205 14491 162.33 443 432 86.6
B 4 173 12213 136.03 443 432 86.6
B 10 246 10649 117.97 443 432 86.6
C 3 233 1267177 12716.08 426 429 99.6
C 3 234 9671 92.77 426 429 99.6
C 13 61 3094 26.75 426 429 99.6
D 12 110 374499 3577.23 435 424 104.6
D 13 172 44262 419.22 435 424 104.6
D 5 222 22280 209.01 435 424 104.6

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