ASTROSAT CZTI

Data Quality Report

Orbit 20210314_A10_094T08_9000004252_level2

Creation date: 2025-12-22T20:11:43.609917
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_094T08_9000004252cztM0_level2.fits modeM0/AS1A10_094T08_9000004252cztM0_level2_quad_clean.evt
Size (bytes)48,358,08032,330,880
Size46.1 MB 30.8 MB
Events in quadrant A278,734136,330
Events in quadrant B264,888142,352
Events in quadrant C276,560132,547
Events in quadrant D286,992209,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097320
B0100380
C0101670
D0336230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0980
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46731513.231329%
B47451763.709168%
C47372044.306523%
D6283108117.205157%

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 6318 4717 0 0 0.00% 0.00%
B 6318 4786 0 0 0.00% 0.00%
C 6318 4778 0 0 0.00% 0.00%
D 6318 6283 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 29 278 10.5 72 68 20.0
A 0 30 243 8.75 72 68 20.0
A 7 110 234 8.3 72 68 20.0
B 2 9 191 7.83 70 67 15.8
B 5 225 172 6.63 70 67 15.8
B 14 254 165 6.19 70 67 15.8
C 12 241 211 7.14 73 68 20.0
C 9 209 203 6.74 73 68 20.0
C 2 191 191 6.14 73 68 20.0
D 15 46 220 6.2 81 74 23.5
D 4 246 220 6.2 81 74 23.5
D 3 14 216 6.03 81 74 23.5

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