ASTROSAT CZTI

Data Quality Report

Orbit 36819

Creation date: 2024-06-27T21:32:00.877822
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/AS1A11_075T01_9000005244_36819cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36819cztM0_level2_quad_clean.evt
Size (bytes)1,357,896,960105,958,080
Size1.3 GB 101.0 MB
Events in quadrant A5,375,819704,733
Events in quadrant B23,235,166374,514
Events in quadrant C5,599,606705,156
Events in quadrant D6,184,334673,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227404
B07644910
C0231023
D0255963

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10806200.185082%
B10805804274.428505%
C10806820.758838%
D108062011.860078%

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 13581 10808 4 4 0.03% 0.04%
B 13580 10806 7531 7531 55.46% 69.69%
C 13581 10808 57 57 0.42% 0.53%
D 13581 10808 160 160 1.18% 1.48%

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 427536 1714.67 1226 1200 248.6
A 9 143 82343 326.35 1226 1200 248.6
A 7 48 79021 312.99 1226 1200 248.6
B 12 1 19270272 129069.71 781 761 149.3
B 5 172 200701 1339.22 781 761 149.3
B 0 189 121892 811.35 781 761 149.3
C 15 214 465019 1675.73 1191 1199 276.8
C 14 254 346465 1247.41 1191 1199 276.8
C 0 207 61313 217.19 1191 1199 276.8
D 12 233 527622 1805.16 1188 1154 291.6
D 13 249 241080 822.66 1188 1154 291.6
D 2 250 237781 811.35 1188 1154 291.6

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