ASTROSAT CZTI

Data Quality Report

Orbit 25169

Creation date: 2024-06-27T19:14:31.873344
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_018T02_9000003684_25169cztM0_level2.evt modeM0/AS1A07_018T02_9000003684_25169cztM0_level2_quad_clean.evt
Size (bytes)514,152,00066,954,240
Size490.3 MB 63.9 MB
Events in quadrant A3,410,866402,347
Events in quadrant B3,467,968406,279
Events in quadrant C3,474,987387,431
Events in quadrant D4,779,945381,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142270
B0143930
C0142150
D0186570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451671.038599%
B6452711.100434%
C6452951.472412%
D64523224.990701%

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 7626 6451 0 0 0.00% 0.00%
B 7627 6452 0 0 0.00% 0.00%
C 7627 6452 0 0 0.00% 0.00%
D 7627 6452 286 286 3.75% 4.43%

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 13 254 10322 53.61 885 868 176.3
A 3 137 7823 39.44 885 868 176.3
A 0 226 7614 38.25 885 868 176.3
B 0 190 49460 296.11 870 850 164.2
B 12 111 19393 112.96 870 850 164.2
B 11 111 17737 102.87 870 850 164.2
C 14 238 136555 699.61 840 846 194.0
C 7 87 29194 146.14 840 846 194.0
C 7 247 20279 100.18 840 846 194.0
D 1 52 1098750 5397.98 849 827 203.4
D 12 235 201586 987.04 849 827 203.4
D 8 195 160325 784.18 849 827 203.4

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