ASTROSAT CZTI

Data Quality Report

Orbit 04669

Creation date: 2024-06-27T14:45:24.603316
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_215T01_9000000586_04669cztM0_level2.evt modeM0/AS1G05_215T01_9000000586_04669cztM0_level2_quad_clean.evt
Size (bytes)2,025,374,400183,064,320
Size1.9 GB 174.6 MB
Events in quadrant A8,006,2751,201,533
Events in quadrant B8,748,9131,211,398
Events in quadrant C7,880,9581,172,769
Events in quadrant D35,494,006719,254

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364854
B0375413
C0364693
D01175923

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179282201.227131%
B179282071.154618%
C179281911.065373%
D179281082660.385988%

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 19763 17931 0 0 0.00% 0.00%
B 19763 17931 0 0 0.00% 0.00%
C 19763 17931 4 4 0.02% 0.02%
D 19762 17929 10175 10175 51.49% 56.75%

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 8 15 78220 181.35 2057 2006 420.3
A 12 194 20578 44.19 2057 2006 420.3
A 0 226 20080 43.01 2057 2006 420.3
B 15 204 481100 1191.54 2079 2020 402.1
B 14 167 115275 281.68 2079 2020 402.1
B 0 219 43938 104.25 2079 2020 402.1
C 9 247 61396 126.63 2001 2000 469.1
C 13 61 16168 30.21 2001 2000 469.1
C 4 112 7828 12.42 2001 2000 469.1
D 8 112 29124380 89949.33 1351 1306 323.8
D 10 15 316178 972.51 1351 1306 323.8
D 2 136 281323 864.86 1351 1306 323.8

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