ASTROSAT CZTI

Data Quality Report

Orbit 31289

Creation date: 2024-06-27T20:26:12.540738
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_024T01_9000004530_31289cztM0_level2.evt modeM0/AS1T04_024T01_9000004530_31289cztM0_level2_quad_clean.evt
Size (bytes)1,538,985,600250,937,280
Size1.4 GB 239.3 MB
Events in quadrant A8,996,8801,611,737
Events in quadrant B14,937,9581,595,951
Events in quadrant C10,043,1771,528,215
Events in quadrant D11,332,4651,538,892

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396884
B0589744
C0423884
D0474354

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192481120.581879%
B192494222.192322%
C192497323.802795%
D192495783.002753%

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 21523 19252 0 0 0.00% 0.00%
B 21524 19253 18 18 0.08% 0.09%
C 21524 19253 14 14 0.07% 0.07%
D 21524 19253 342 342 1.59% 1.78%

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 13 254 34360 68.88 2331 2280 465.7
A 3 137 24349 47.39 2331 2280 465.7
A 0 226 19233 36.4 2331 2280 465.7
B 6 159 5348884 12096.06 2299 2235 442.0
B 4 80 469850 1057.91 2299 2235 442.0
B 12 111 56015 121.67 2299 2235 442.0
C 3 233 610446 1180.95 2208 2218 515.0
C 14 238 460426 889.67 2208 2218 515.0
C 14 254 142462 272.3 2208 2218 515.0
D 8 195 1367543 2426.61 2216 2162 562.7
D 12 233 1139401 2021.15 2216 2162 562.7
D 2 250 203549 357.91 2216 2162 562.7

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