ASTROSAT CZTI

Data Quality Report

Orbit 20200812_A09_038T02_9000003798_level2

Creation date: 2025-12-14T06:34:54.914790
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/AS1A09_038T02_9000003798cztM0_level2.fits modeM0/AS1A09_038T02_9000003798cztM0_level2_quad_clean.evt
Size (bytes)109,635,840126,426,240
Size104.6 MB 120.6 MB
Events in quadrant A668,602791,201
Events in quadrant B647,580801,774
Events in quadrant C645,804733,790
Events in quadrant D580,358723,816

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229200
B0230800
C0296750
D0254250

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11244670.595873%
B112441151.022768%
C112447796.928139%
D112441611.431875%

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 13044 11244 0 0 0.00% 0.00%
B 13044 11244 0 0 0.00% 0.00%
C 13044 11243 0 0 0.00% 0.00%
D 13044 11244 0 0 0.00% 0.00%

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 29 662 11.2 174 164 44.5
A 7 110 536 8.37 174 164 44.5
A 0 30 504 7.65 174 164 44.5
B 2 9 511 9.89 171 164 35.1
B 2 8 450 8.15 171 164 35.1
B 3 17 440 7.86 171 164 35.1
C 3 202 525 8.0 170 160 45.6
C 1 81 522 7.93 170 160 45.6
C 1 80 518 7.84 170 160 45.6
D 6 231 437 6.21 165 150 46.2
D 3 14 424 5.93 165 150 46.2
D 6 38 416 5.76 165 150 46.2

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