ASTROSAT CZTI

Data Quality Report

Orbit 04981

Creation date: 2024-06-27T14:49:43.032102
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/AS1G05_158T01_9000000630_04981cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04981cztM0_level2_quad_clean.evt
Size (bytes)251,078,40036,866,880
Size239.4 MB 35.2 MB
Events in quadrant A1,051,454260,179
Events in quadrant B1,327,839256,521
Events in quadrant C1,044,557258,040
Events in quadrant D4,022,022174,876

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046652
B054064
C047790
D01350921

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230040.173913%
B2299170.739452%
C230170.304216%
D2298109547.650131%

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 2301 2301 0 0 0.00% 0.00%
B 2301 2300 17 17 0.74% 0.74%
C 2301 2301 6 6 0.26% 0.26%
D 2301 2298 1166 1166 50.67% 50.74%

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 31 12067 208.86 269 264 56.5
A 12 194 2802 44.91 269 264 56.5
A 0 226 2741 43.83 269 264 56.5
B 14 167 172233 3277.66 266 260 52.5
B 0 219 91781 1744.31 266 260 52.5
B 0 183 15253 285.75 266 260 52.5
C 1 16 55123 910.57 253 256 60.3
C 13 61 2095 30.52 253 256 60.3
C 3 202 604 5.78 253 256 60.3
D 4 95 3045950 62751.54 190 183 48.5
D 13 235 68240 1402.17 190 183 48.5
D 2 33 56841 1167.32 190 183 48.5

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