ASTROSAT CZTI

Data Quality Report

Orbit 13566

Creation date: 2024-06-27T16:42:45.689932
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/AS1A04_180T01_9000002000_13566cztM0_level2.evt modeM0/AS1A04_180T01_9000002000_13566cztM0_level2_quad_clean.evt
Size (bytes)591,094,08080,470,080
Size563.7 MB 76.7 MB
Events in quadrant A3,693,567491,784
Events in quadrant B3,899,755489,718
Events in quadrant C4,120,437485,248
Events in quadrant D5,678,531447,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157073
B0162382
C0164132
D0217542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75071171.558545%
B75071902.530971%
C75071341.785001%
D75075397.179965%

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 7803 7508 0 0 0.00% 0.00%
B 7803 7508 51 51 0.65% 0.68%
C 7803 7508 0 0 0.00% 0.00%
D 7803 7508 396 396 5.07% 5.27%

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 1 162 23319 116.12 945 926 192.8
A 4 2 12168 58.3 945 926 192.8
A 0 226 9174 42.77 945 926 192.8
B 0 182 113614 622.11 935 912 181.2
B 3 64 65209 354.92 935 912 181.2
B 3 209 29775 159.32 935 912 181.2
C 3 233 563103 2634.95 910 914 213.4
C 13 61 6522 26.28 910 914 213.4
C 8 128 3755 13.32 910 914 213.4
D 13 122 843690 3840.69 898 873 219.4
D 8 195 525194 2389.32 898 873 219.4
D 13 104 347000 1577.29 898 873 219.4

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