ASTROSAT CZTI

Data Quality Report

Orbit 15973

Creation date: 2024-06-27T17:15:53.989441
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/AS1T02_087T01_9000002352_15973cztM0_level2.evt modeM0/AS1T02_087T01_9000002352_15973cztM0_level2_quad_clean.evt
Size (bytes)923,319,360154,944,000
Size880.5 MB 147.8 MB
Events in quadrant A6,302,676970,326
Events in quadrant B7,727,095961,957
Events in quadrant C6,309,271938,211
Events in quadrant D6,736,685916,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272314
B0310043
C0271613
D0288853

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02660
B02660
C02660
D02660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131082842.166616%
B131086354.844370%
C131083182.425999%
D131082141.632591%

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 14609 13109 20 20 0.14% 0.15%
B 14609 13109 260 260 1.78% 1.98%
C 14609 13109 6 6 0.04% 0.05%
D 14609 13109 11 11 0.08% 0.08%

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 15 239 81150 245.71 1597 1563 323.9
A 9 143 48450 144.76 1597 1563 323.9
A 5 98 16411 45.84 1597 1563 323.9
B 10 245 778966 2522.33 1589 1545 308.2
B 15 222 253306 816.83 1589 1545 308.2
B 4 173 183203 589.39 1589 1545 308.2
C 14 238 230631 632.58 1528 1533 362.2
C 3 233 74328 201.0 1528 1533 362.2
C 9 236 39344 104.4 1528 1533 362.2
D 12 110 597464 1557.57 1552 1504 382.6
D 1 52 170207 440.91 1552 1504 382.6
D 10 70 53666 136.33 1552 1504 382.6

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