ASTROSAT CZTI

Data Quality Report

Orbit 18289

Creation date: 2024-06-27T17:47:55.076815
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_006T01_9000002720_18289cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18289cztM0_level2_quad_clean.evt
Size (bytes)1,115,265,600162,797,760
Size1.0 GB 155.3 MB
Events in quadrant A6,119,1731,051,082
Events in quadrant B6,351,5341,053,609
Events in quadrant C6,022,2961,028,784
Events in quadrant D14,418,200911,011

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267843
B0272703
C0263703
D0517833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12811820.640075%
B128111230.960112%
C12811700.546405%
D12811192915.057373%

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 14116 12813 29 29 0.21% 0.23%
B 14116 12813 41 41 0.29% 0.32%
C 14116 12813 2 2 0.01% 0.02%
D 14116 12812 1625 1625 11.51% 12.68%

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 15 174 242544 784.94 1517 1484 307.1
A 9 143 32767 101.86 1517 1484 307.1
A 4 2 16270 48.15 1517 1484 307.1
B 0 190 179226 611.69 1518 1481 290.6
B 7 220 70901 238.9 1518 1481 290.6
B 0 197 51018 170.47 1518 1481 290.6
C 14 238 219974 640.35 1453 1461 341.2
C 3 233 87114 251.0 1453 1461 341.2
C 0 207 37055 104.31 1453 1461 341.2
D 7 238 4728739 13771.36 1394 1348 343.3
D 1 52 2497267 7270.86 1394 1348 343.3
D 13 168 832873 2422.31 1394 1348 343.3

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