ASTROSAT CZTI

Data Quality Report

Orbit 33699

Creation date: 2024-06-27T20:51:39.361491
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/AS1T04_090T01_9000004812_33699cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33699cztM0_level2_quad_clean.evt
Size (bytes)3,294,921,600237,415,680
Size3.1 GB 226.4 MB
Events in quadrant A51,009,771798,199
Events in quadrant B15,178,2131,634,900
Events in quadrant C13,120,4111,691,101
Events in quadrant D19,011,9491,551,874

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01670266
B0587365
C0520035
D0722465

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A219221666476.014962%
B2192213236.035033%
C219222861.304625%
D2192213065.957486%

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 31785 21922 16292 16292 51.26% 74.32%
B 31785 21925 1071 1071 3.37% 4.88%
C 31785 21926 232 232 0.73% 1.06%
D 31785 21926 1349 1349 4.24% 6.15%

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 15 169 43975578 159322.49 1419 1395 276.0
A 15 237 1284406 4648.47 1419 1395 276.0
A 14 4 240840 867.53 1419 1395 276.0
B 5 172 3655302 7424.03 2680 2623 492.0
B 4 170 302816 610.14 2680 2623 492.0
B 15 85 279917 563.6 2680 2623 492.0
C 15 214 942726 1543.1 2700 2730 609.2
C 3 233 892411 1460.51 2700 2730 609.2
C 0 10 638688 1043.99 2700 2730 609.2
D 8 195 2580948 3675.51 2630 2588 701.5
D 8 230 1711439 2436.01 2630 2588 701.5
D 2 249 1177277 1674.55 2630 2588 701.5

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