ASTROSAT CZTI

Data Quality Report

Orbit 12629

Creation date: 2024-06-27T16:30:13.102958
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/AS1G08_071T01_9000001874_12629cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12629cztM0_level2_quad_clean.evt
Size (bytes)1,020,188,160153,947,520
Size972.9 MB 146.8 MB
Events in quadrant A6,030,264948,475
Events in quadrant B7,388,635957,988
Events in quadrant C6,092,686961,876
Events in quadrant D10,495,498884,404

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269514
B0303233
C0273903
D0401783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131502261.718631%
B131504773.627376%
C131501531.163498%
D131506725.110266%

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 14586 13151 5 5 0.03% 0.04%
B 14586 13151 161 161 1.10% 1.22%
C 14586 13151 11 11 0.08% 0.08%
D 14586 13151 413 413 2.83% 3.14%

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 12 189 83613 262.14 1538 1501 313.2
A 8 192 32172 97.92 1538 1501 313.2
A 0 226 13804 39.28 1538 1501 313.2
B 4 239 842142 2871.4 1527 1484 292.8
B 11 51 217259 737.01 1527 1484 292.8
B 3 64 155424 525.8 1527 1484 292.8
C 15 208 264142 758.46 1492 1496 346.3
C 13 61 11007 27.47 1492 1496 346.3
C 8 222 8901 21.38 1492 1496 346.3
D 10 157 2274855 6472.53 1460 1417 351.2
D 1 52 1746124 4967.22 1460 1417 351.2
D 13 104 413500 1173.21 1460 1417 351.2

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