ASTROSAT CZTI

Data Quality Report

Orbit 14393

Creation date: 2024-06-27T16:54:31.110252
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_075T01_9000002120_14393cztM0_level2.evt modeM0/AS1G08_075T01_9000002120_14393cztM0_level2_quad_clean.evt
Size (bytes)236,712,96022,965,120
Size225.7 MB 21.9 MB
Events in quadrant A1,575,440121,703
Events in quadrant B1,847,514121,056
Events in quadrant C1,808,940118,494
Events in quadrant D1,729,282117,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A065451
B074241
C073021
D071161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30351264.151565%
B30351514.975288%
C3035993.261944%
D30351414.645799%

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 3091 3036 16 16 0.52% 0.53%
B 3091 3036 13 13 0.42% 0.43%
C 3091 3037 0 0 0.00% 0.00%
D 3091 3036 40 40 1.29% 1.32%

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 69 46716 575.02 385 375 80.6
A 8 15 25618 313.23 385 375 80.6
A 12 189 15205 184.02 385 375 80.6
B 0 189 192414 2551.39 378 367 75.3
B 4 173 50651 668.03 378 367 75.3
B 0 190 38037 500.45 378 367 75.3
C 3 233 374282 4362.74 366 367 85.7
C 13 61 2705 27.28 366 367 85.7
C 3 232 2157 20.89 366 367 85.7
D 12 110 138964 1462.79 370 360 94.8
D 2 120 69504 729.73 370 360 94.8
D 10 199 53177 557.42 370 360 94.8

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