ASTROSAT CZTI

Data Quality Report

Orbit 30181

Creation date: 2024-06-27T20:11:55.566134
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/AS1A10_102T01_9000004340_30181cztM0_level2.evt modeM0/AS1A10_102T01_9000004340_30181cztM0_level2_quad_clean.evt
Size (bytes)962,112,96070,657,920
Size917.5 MB 67.4 MB
Events in quadrant A3,256,261522,510
Events in quadrant B5,028,713532,835
Events in quadrant C15,186,116212,479
Events in quadrant D5,248,887437,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131682
B0189092
C0493282
D0195852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6193280.452123%
B6193711.146456%
C6193618299.822380%
D619370911.448409%

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 7548 6194 1 1 0.01% 0.02%
B 7548 6194 1 1 0.01% 0.02%
C 7547 6192 5722 5722 75.82% 92.41%
D 7548 6194 638 638 8.45% 10.30%

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 8 192 22173 128.14 839 826 166.6
A 13 254 10214 56.35 839 826 166.6
A 3 137 7812 41.93 839 826 166.6
B 6 159 1703580 10860.86 837 818 156.8
B 0 229 32960 205.01 837 818 156.8
B 12 111 18966 115.75 837 818 156.8
C 3 233 13503688 143275.03 403 406 94.2
C 14 238 76344 805.73 403 406 94.2
C 14 254 22252 231.79 403 406 94.2
D 13 104 1480321 8316.09 752 737 177.9
D 1 52 687156 3858.06 752 737 177.9
D 8 195 150931 844.17 752 737 177.9

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