ASTROSAT CZTI

Data Quality Report

Orbit 24884

Creation date: 2024-06-27T19:11:00.512934
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/AS1A07_027T16_9000003642_24884cztM0_level2.evt modeM0/AS1A07_027T16_9000003642_24884cztM0_level2_quad_clean.evt
Size (bytes)632,750,40089,700,480
Size603.4 MB 85.5 MB
Events in quadrant A3,817,497582,305
Events in quadrant B3,041,472601,029
Events in quadrant C7,983,956532,476
Events in quadrant D3,900,110567,376

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152601
B0128561
C0278311
D0155551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62011312.112562%
B6202661.064173%
C6202193331.167365%
D62021482.386327%

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 7241 6202 78 78 1.08% 1.26%
B 7242 6203 0 0 0.00% 0.00%
C 7242 6203 1591 1591 21.97% 25.65%
D 7242 6203 86 86 1.19% 1.39%

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 6 16 836877 5373.53 773 759 155.6
A 13 254 9571 56.63 773 759 155.6
A 3 137 6731 38.38 773 759 155.6
B 12 111 17535 115.47 767 747 145.4
B 11 111 15855 103.91 767 747 145.4
B 14 111 14292 93.16 767 747 145.4
C 7 247 5318343 35125.31 651 658 151.4
C 14 238 102030 669.6 651 658 151.4
C 7 226 16093 101.95 651 658 151.4
D 1 52 676470 3659.25 765 743 184.7
D 8 195 288923 1560.58 765 743 184.7
D 7 238 37529 199.21 765 743 184.7

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