ASTROSAT CZTI

Data Quality Report

Orbit 16810

Creation date: 2024-06-27T17:28:07.280712
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_140T01_9000002496_16810cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16810cztM0_level2_quad_clean.evt
Size (bytes)620,481,60090,590,400
Size591.7 MB 86.4 MB
Events in quadrant A4,399,670564,260
Events in quadrant B4,581,882569,478
Events in quadrant C4,098,689547,538
Events in quadrant D5,194,144531,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180873
B0186312
C0171472
D0205072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76243033.974292%
B76242783.646380%
C76241652.164218%
D76244315.653200%

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 8235 7627 72 72 0.87% 0.94%
B 8235 7627 51 51 0.62% 0.67%
C 8235 7627 0 0 0.00% 0.00%
D 8235 7626 265 265 3.22% 3.47%

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 784199 4124.33 931 910 189.9
A 9 143 38632 198.62 931 910 189.9
A 0 226 8304 38.93 931 910 189.9
B 15 35 454795 2496.95 934 908 181.8
B 4 216 138223 755.4 934 908 181.8
B 0 229 74239 403.41 934 908 181.8
C 3 233 451863 2143.33 894 900 210.4
C 14 238 135765 640.98 894 900 210.4
C 0 207 19415 88.0 894 900 210.4
D 1 52 951819 4339.45 890 862 219.1
D 15 0 339126 1543.58 890 862 219.1
D 12 218 287132 1306.32 890 862 219.1

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