ASTROSAT CZTI

Data Quality Report

Orbit 21122

Creation date: 2024-06-27T18:23:52.550528
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/AS1A05_104T05_9000003120_21122cztM0_level2.evt modeM0/AS1A05_104T05_9000003120_21122cztM0_level2_quad_clean.evt
Size (bytes)574,896,96080,464,320
Size548.3 MB 76.7 MB
Events in quadrant A3,665,955497,607
Events in quadrant B4,019,058493,940
Events in quadrant C3,669,957470,921
Events in quadrant D5,547,864453,183

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156982
B0165422
C0156632
D0215372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74832893.862087%
B74833624.837632%
C74833094.129360%
D74844876.507215%

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 8553 7486 0 0 0.00% 0.00%
B 8553 7486 21 21 0.25% 0.28%
C 8553 7486 0 0 0.00% 0.00%
D 8554 7487 189 189 2.21% 2.52%

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 15 192 23598 117.83 944 920 192.5
A 13 254 10113 47.76 944 920 192.5
A 0 226 8186 37.75 944 920 192.5
B 0 182 148698 802.22 944 920 184.2
B 7 220 67552 361.71 944 920 184.2
B 0 190 27533 144.47 944 920 184.2
C 14 238 138545 640.32 905 910 214.9
C 13 61 6467 25.85 905 910 214.9
C 9 54 3396 11.57 905 910 214.9
D 1 20 799124 3648.21 899 874 218.8
D 5 222 645964 2948.23 899 874 218.8
D 1 52 236849 1078.47 899 874 218.8

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