ASTROSAT CZTI

Data Quality Report

Orbit 34691

Creation date: 2022-02-27T05:06:52.590027
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/AS1A07_093T29_9000004968_34691cztM0_level2.evt modeM0/AS1A07_093T29_9000004968_34691cztM0_level2_quad_clean.evt
Size (bytes)806,094,720121,668,480
Size768.8 MB 116.0 MB
Events in quadrant A5,067,102776,136
Events in quadrant B6,536,227763,716
Events in quadrant C4,450,957787,215
Events in quadrant D7,758,239740,462

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209213
B0251982
C0186432
D0292372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88881641.845185%
B88885786.503150%
C8888590.663816%
D88882542.857786%

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 11753 8890 127 127 1.08% 1.43%
B 11753 8890 414 414 3.52% 4.66%
C 11753 8890 37 37 0.31% 0.42%
D 11753 8890 152 152 1.29% 1.71%

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 504546 2469.73 1017 995 203.9
A 14 250 332229 1624.58 1017 995 203.9
A 15 169 144539 704.03 1017 995 203.9
B 5 172 2120373 11102.59 994 967 190.9
B 5 255 192273 1002.16 994 967 190.9
B 0 190 146543 762.6 994 967 190.9
C 15 214 374527 1632.74 989 993 228.8
C 0 10 161997 703.76 989 993 228.8
C 14 67 34046 144.48 989 993 228.8
D 8 195 2790819 10733.38 974 952 259.9
D 2 250 413036 1585.4 974 952 259.9
D 2 249 184663 706.79 974 952 259.9

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