ASTROSAT CZTI

Data Quality Report

Orbit 38985

Creation date: 2024-06-27T21:58:58.642984
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/AS1A12_057T01_9000005418_38985cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38985cztM0_level2_quad_clean.evt
Size (bytes)106,038,72028,546,560
Size101.1 MB 27.2 MB
Events in quadrant A887,497193,479
Events in quadrant B796,792198,909
Events in quadrant C770,078190,659
Events in quadrant D1,353,197172,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035681
B032691
C031061
D051261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147860.405954%
B1478171.150203%
C147810.067659%
D1478553.721245%

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 3631 1479 3 3 0.08% 0.20%
B 3631 1479 14 14 0.39% 0.95%
C 3631 1479 0 0 0.00% 0.00%
D 3631 1479 45 45 1.24% 3.04%

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 156756 4206.66 176 172 37.2
A 15 222 34803 930.37 176 172 37.2
A 13 248 5204 135.19 176 172 37.2
B 5 172 66087 1858.85 178 174 35.5
B 0 230 27154 760.88 178 174 35.5
B 12 111 4124 111.4 178 174 35.5
C 15 214 68524 1610.65 178 181 42.4
C 1 128 1629 34.13 178 181 42.4
C 0 10 1608 33.63 178 181 42.4
D 12 235 441514 10052.06 174 169 43.9
D 1 47 133525 3037.31 174 169 43.9
D 12 227 79510 1807.07 174 169 43.9

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