ASTROSAT CZTI

Data Quality Report

Orbit 24491

Creation date: 2024-06-27T19:06:31.353642
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_24491cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24491cztM0_level2_quad_clean.evt
Size (bytes)253,494,720126,789,120
Size241.8 MB 120.9 MB
Events in quadrant A3,827,607870,091
Events in quadrant B3,853,296894,310
Events in quadrant C3,348,333829,331
Events in quadrant D3,226,812810,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155412
B0154662
C0138352
D0137462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62541872.990086%
B62541722.750240%
C62531041.663202%
D6253500.799616%

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 7574 6256 27 27 0.36% 0.43%
B 7574 6256 53 53 0.70% 0.85%
C 7573 6255 16 16 0.21% 0.26%
D 7573 6255 7 7 0.09% 0.11%

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 14 111 640550 3954.21 817 805 161.8
A 6 16 18135 107.12 817 805 161.8
A 3 1 11159 64.0 817 805 161.8
B 3 64 587637 3859.99 821 803 152.0
B 5 172 36824 236.93 821 803 152.0
B 15 33 20865 131.96 821 803 152.0
C 2 16 152370 853.4 773 779 177.6
C 14 238 128083 716.67 773 779 177.6
C 7 247 35022 192.78 773 779 177.6
D 1 52 109083 576.8 779 757 187.8
D 12 218 100917 533.31 779 757 187.8
D 8 195 31461 163.49 779 757 187.8

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