ASTROSAT CZTI

Data Quality Report

Orbit 16644

Creation date: 2024-06-27T17:25:27.652520
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_002T09_9000002456_16644cztM0_level2.evt modeM0/AS1A05_002T09_9000002456_16644cztM0_level2_quad_clean.evt
Size (bytes)131,808,96018,996,480
Size125.7 MB 18.1 MB
Events in quadrant A876,555117,873
Events in quadrant B991,032120,943
Events in quadrant C1,136,261112,093
Events in quadrant D883,308112,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036222
B040141
C045151
D035991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150590.598007%
B150590.598007%
C1505362.392027%
D1505120.797342%

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 1506 1506 0 0 0.00% 0.00%
B 1506 1506 2 2 0.13% 0.13%
C 1506 1506 0 0 0.00% 0.00%
D 1506 1506 6 6 0.40% 0.40%

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 96 2552 50.28 226 223 46.3
A 0 226 2033 39.07 226 223 46.3
A 12 194 1727 32.47 226 223 46.3
B 15 35 65570 1526.5 224 220 42.8
B 0 198 22331 516.49 224 220 42.8
B 0 189 15837 364.8 224 220 42.8
C 7 247 256940 5293.7 207 209 48.5
C 14 238 35169 720.86 207 209 48.5
C 3 233 33419 684.78 207 209 48.5
D 1 52 19741 362.52 215 208 53.9
D 10 70 14256 260.72 215 208 53.9
D 2 33 13506 246.8 215 208 53.9

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