ASTROSAT CZTI

Data Quality Report

Orbit 12784

Creation date: 2024-06-27T16:32:12.424406
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_110T04_9000001886_12784cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12784cztM0_level2_quad_clean.evt
Size (bytes)619,640,640126,420,480
Size590.9 MB 120.6 MB
Events in quadrant A3,377,181871,953
Events in quadrant B4,720,873860,213
Events in quadrant C3,294,746876,109
Events in quadrant D6,890,509724,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150033
B0189402
C0149322
D0253522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7118640.899129%
B71185087.136836%
C7118630.885080%
D7118135519.036246%

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 7579 7120 10 10 0.13% 0.14%
B 7579 7120 302 302 3.98% 4.24%
C 7579 7120 5 5 0.07% 0.07%
D 7579 7120 932 932 12.30% 13.09%

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 12 189 95890 570.52 827 809 166.7
A 15 222 47837 282.18 827 809 166.7
A 9 143 26477 154.02 827 809 166.7
B 4 239 1375477 9022.47 807 786 152.4
B 0 219 116987 762.66 807 786 152.4
B 3 209 23952 152.04 807 786 152.4
C 15 208 120178 636.42 813 815 187.6
C 13 61 5925 27.25 813 815 187.6
C 8 222 2318 8.01 813 815 187.6
D 1 52 3535705 20869.78 711 688 169.4
D 8 195 324848 1913.75 711 688 169.4
D 7 80 225089 1324.8 711 688 169.4

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