ASTROSAT CZTI

Data Quality Report

Orbit 18816

Creation date: 2024-06-27T17:55:12.626573
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/AS1A05_173T01_9000002812_18816cztM0_level2.evt modeM0/AS1A05_173T01_9000002812_18816cztM0_level2_quad_clean.evt
Size (bytes)426,424,32082,909,440
Size406.7 MB 79.1 MB
Events in quadrant A3,008,887542,119
Events in quadrant B3,090,660548,996
Events in quadrant C3,472,862518,140
Events in quadrant D2,959,317507,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120221
B0123701
C0139221
D0121751

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5627691.226231%
B5628891.581379%
C56271182.097032%
D5627641.137373%

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 6897 5628 0 0 0.00% 0.00%
B 6898 5629 3 3 0.04% 0.05%
C 6897 5628 3 3 0.04% 0.05%
D 6897 5628 10 10 0.14% 0.18%

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 14 4 53259 339.11 765 752 154.8
A 4 2 10009 59.79 765 752 154.8
A 13 254 8436 49.63 765 752 154.8
B 4 171 31821 219.05 750 734 141.9
B 7 220 21591 146.97 750 734 141.9
B 4 216 20479 139.13 750 734 141.9
C 3 233 544969 3257.08 718 726 167.1
C 14 238 113251 673.42 718 726 167.1
C 0 207 9729 53.88 718 726 167.1
D 7 38 69696 385.66 735 716 178.9
D 12 110 53021 292.44 735 716 178.9
D 7 238 26437 143.81 735 716 178.9

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