ASTROSAT CZTI

Data Quality Report

Orbit 35847

Creation date: 2022-06-08T17:53:54.280942
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/AS1A11_080T01_9000005146_35847cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35847cztM0_level2_quad_clean.evt
Size (bytes)448,418,88096,240,960
Size427.6 MB 91.8 MB
Events in quadrant A3,016,515634,571
Events in quadrant B3,270,652630,660
Events in quadrant C3,291,784621,774
Events in quadrant D3,580,487595,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128133
B0136642
C0133592
D0146682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A619690.145255%
B6196520.839251%
C6196761.226598%
D6196881.420271%

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 8792 6198 0 0 0.00% 0.00%
B 8792 6198 20 20 0.23% 0.32%
C 8792 6198 63 63 0.72% 1.02%
D 8792 6198 72 72 0.82% 1.16%

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 10 83 169398 1129.6 734 721 149.3
A 13 254 9825 60.97 734 721 149.3
A 13 6 8078 49.27 734 721 149.3
B 5 172 144947 1030.14 726 710 140.0
B 4 232 101436 719.39 726 710 140.0
B 0 213 90923 644.3 726 710 140.0
C 15 214 257083 1557.21 707 714 164.6
C 0 10 203422 1231.27 707 714 164.6
C 15 208 58356 350.12 707 714 164.6
D 7 223 245547 1416.69 706 689 172.8
D 13 249 236940 1366.89 706 689 172.8
D 8 195 116905 672.4 706 689 172.8

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