ASTROSAT CZTI

Data Quality Report

Orbit 39129

Creation date: 2024-06-27T22:00:46.700784
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/AS1A12_025T11_9000005438_39129cztM0_level2.fits modeM0/AS1A12_025T11_9000005438_39129cztM0_level2_quad_clean.evt
Size (bytes)188,890,56041,561,280
Size180.1 MB 39.6 MB
Events in quadrant A1,411,107292,307
Events in quadrant B1,188,068294,765
Events in quadrant C1,351,147277,949
Events in quadrant D2,858,827225,782

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058102
B049641
C053481
D0101571

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2326130.558899%
B2326200.859845%
C2326351.504729%
D232640017.196905%

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 4450 2327 3 3 0.07% 0.13%
B 4450 2327 11 11 0.25% 0.47%
C 4450 2327 29 29 0.65% 1.25%
D 4450 2327 313 313 7.03% 13.45%

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 10 83 201022 3488.7 279 273 57.5
A 15 223 122146 2117.96 279 273 57.5
A 13 248 7960 133.59 279 273 57.5
B 5 172 66668 1210.08 277 269 54.9
B 0 190 18998 341.32 277 269 54.9
B 15 32 7782 136.92 277 269 54.9
C 9 187 190110 2995.2 270 272 63.4
C 15 214 98336 1547.22 270 272 63.4
C 0 10 7404 112.53 270 272 63.4
D 12 235 1170951 18217.36 255 249 64.3
D 5 222 517344 8046.55 255 249 64.3
D 2 249 93640 1453.26 255 249 64.3

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