ASTROSAT CZTI

Data Quality Report

Orbit 24543

Creation date: 2024-06-27T19:07:05.834287
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/AS1T03_183T01_9000003606_24543cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24543cztM0_level2_quad_clean.evt
Size (bytes)1,381,798,080312,747,840
Size1.3 GB 298.3 MB
Events in quadrant A8,499,6622,097,235
Events in quadrant B12,233,6992,095,181
Events in quadrant C8,696,1482,036,241
Events in quadrant D11,173,0151,974,350

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376085
B0482244
C0378934
D0453524

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184222121.150798%
B1842214697.974161%
C184233591.948651%
D184235372.914835%

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 20647 18426 2 2 0.01% 0.01%
B 20647 18425 931 931 4.51% 5.05%
C 20648 18425 3 3 0.01% 0.02%
D 20648 18427 291 291 1.41% 1.58%

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 29396 61.65 2200 2150 441.9
A 3 137 20343 41.17 2200 2150 441.9
A 0 226 18690 37.43 2200 2150 441.9
B 3 64 3750462 9282.03 2141 2084 403.8
B 12 111 49984 118.61 2141 2084 403.8
B 11 111 44934 106.11 2141 2084 403.8
C 14 238 335427 680.49 2111 2116 489.8
C 2 16 91538 182.56 2111 2116 489.8
C 3 233 27820 52.48 2111 2116 489.8
D 9 1 1177127 2279.76 2124 2055 515.4
D 1 52 878953 1701.27 2124 2055 515.4
D 12 218 701931 1357.83 2124 2055 515.4

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