ASTROSAT CZTI

Data Quality Report

Orbit 18999

Creation date: 2024-06-27T17:57:53.134165
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/AS1A06_003T05_9000002830_18999cztM0_level2.evt modeM0/AS1A06_003T05_9000002830_18999cztM0_level2_quad_clean.evt
Size (bytes)235,955,52034,966,080
Size225.0 MB 33.3 MB
Events in quadrant A2,727,738205,713
Events in quadrant B1,340,294235,292
Events in quadrant C1,228,625228,076
Events in quadrant D1,690,035222,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095801
B053431
C050161
D066891

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231081635.324675%
B2310903.896104%
C2310522.251082%
D2310783.376623%

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 3150 2310 666 666 21.14% 28.83%
B 3150 2311 21 21 0.67% 0.91%
C 3150 2311 0 0 0.00% 0.00%
D 3150 2311 16 16 0.51% 0.69%

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 14 235 1880008 41398.09 217 213 45.4
A 9 143 5923 125.75 217 213 45.4
A 4 2 1904 37.24 217 213 45.4
B 3 112 86964 1437.84 299 291 60.3
B 0 197 24502 401.64 299 291 60.3
B 0 190 23986 393.08 299 291 60.3
C 14 238 44735 641.82 290 291 69.2
C 9 54 35699 511.33 290 291 69.2
C 3 233 14967 211.94 290 291 69.2
D 7 238 511415 6991.26 295 287 73.1
D 9 1 47590 647.01 295 287 73.1
D 2 234 10316 137.18 295 287 73.1

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