ASTROSAT CZTI

Data Quality Report

Orbit 07700

Creation date: 2024-06-27T15:22:53.190002
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/AS1A02_155T01_9000001062_07700cztM0_level2.evt modeM0/AS1A02_155T01_9000001062_07700cztM0_level2_quad_clean.evt
Size (bytes)492,874,56067,582,080
Size470.0 MB 64.5 MB
Events in quadrant A2,883,581421,910
Events in quadrant B2,974,490432,620
Events in quadrant C2,868,850423,939
Events in quadrant D5,809,098365,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119922
B0121231
C0119381
D0209741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5754611.060132%
B5754581.007994%
C5754510.886340%
D5754132823.079597%

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 7079 5754 6 6 0.08% 0.10%
B 7079 5755 0 0 0.00% 0.00%
C 7079 5755 2 2 0.03% 0.03%
D 7079 5755 1187 1187 16.77% 20.63%

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 13 248 39083 259.32 738 722 147.9
A 0 226 7128 43.3 738 722 147.9
A 12 194 6377 38.23 738 722 147.9
B 15 85 42319 300.24 740 723 138.5
B 0 214 25715 180.39 740 723 138.5
B 0 230 17841 123.56 740 723 138.5
C 9 68 15359 87.28 726 733 167.6
C 10 22 9342 51.37 726 733 167.6
C 8 229 7952 43.08 726 733 167.6
D 12 221 3327977 21777.87 630 613 152.8
D 1 83 31282 200.73 630 613 152.8
D 2 152 28301 181.22 630 613 152.8

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