ASTROSAT CZTI

Data Quality Report

Orbit 47918

Creation date: 2024-08-07T23:14:18.240510
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/AS1A13_025T02_9000006380_47918cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47918cztM0_level2_quad_clean.evt
Size (bytes)690,563,520159,877,440
Size658.6 MB 152.5 MB
Events in quadrant A10,559,2601,026,184
Events in quadrant B4,767,2021,075,971
Events in quadrant C4,601,7351,051,557
Events in quadrant D4,832,786970,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390171
B0216021
C0215941
D0221901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103414714.554685%
B103411471.421526%
C10341860.831641%
D103421010.976600%

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 10656 10342 167 167 1.57% 1.61%
B 10656 10342 4 4 0.04% 0.04%
C 10656 10342 26 26 0.24% 0.25%
D 10657 10343 35 35 0.33% 0.34%

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 10 83 5544524 23822.65 1110 1084 232.7
A 13 248 690979 2964.79 1110 1084 232.7
A 7 3 22352 91.4 1110 1084 232.7
B 0 200 143622 643.78 1118 1082 221.4
B 5 255 86480 385.7 1118 1082 221.4
B 12 111 29029 126.22 1118 1082 221.4
C 12 2 118265 447.85 1108 1112 261.6
C 14 254 111432 421.73 1108 1112 261.6
C 14 67 25728 94.1 1108 1112 261.6
D 13 29 212445 753.29 1113 1080 280.6
D 2 249 154352 546.25 1113 1080 280.6
D 2 234 54771 191.35 1113 1080 280.6

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