ASTROSAT CZTI

Data Quality Report

Orbit 23399

Creation date: 2024-06-27T18:53:51.104705
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/AS1A07_127T02_9000003460_23399cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23399cztM0_level2_quad_clean.evt
Size (bytes)1,587,096,000119,543,040
Size1.5 GB 114.0 MB
Events in quadrant A6,572,033808,860
Events in quadrant B6,067,470820,637
Events in quadrant C6,257,017780,547
Events in quadrant D28,334,853351,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275432
B0257912
C0263352
D0926412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12375810.654545%
B12376790.638332%
C123762291.850356%
D12376983979.500646%

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 13800 12375 18 18 0.13% 0.15%
B 13801 12377 14 14 0.10% 0.11%
C 13801 12376 112 112 0.81% 0.90%
D 13801 12376 9711 9711 70.36% 78.47%

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 6 16 836101 2785.91 1488 1457 299.6
A 13 254 18896 58.21 1488 1457 299.6
A 3 137 13304 39.54 1488 1457 299.6
B 0 189 122009 418.69 1484 1442 288.0
B 0 190 97912 335.01 1484 1442 288.0
B 0 229 37475 125.13 1484 1442 288.0
C 10 9 381067 1136.63 1425 1436 334.0
C 14 238 224566 668.06 1425 1436 334.0
C 0 207 52227 152.07 1425 1436 334.0
D 1 52 25075700 122621.69 842 816 204.5
D 2 234 28756 136.63 842 816 204.5
D 12 227 23081 108.88 842 816 204.5

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