ASTROSAT CZTI

Data Quality Report

Orbit 16596

Creation date: 2024-06-27T17:24:52.207406
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/AS1C04_009T01_9000002448_16596cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16596cztM0_level2_quad_clean.evt
Size (bytes)755,850,240187,130,880
Size720.8 MB 178.5 MB
Events in quadrant A4,730,7941,257,819
Events in quadrant B5,982,4051,277,147
Events in quadrant C6,408,2791,221,077
Events in quadrant D5,070,5321,196,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211423
B0242632
C0258692
D0222462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02100
B02100
C02100
D02100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10328470.455074%
B103281291.249032%
C103281081.045701%
D10328700.677769%

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 11894 10331 1 1 0.01% 0.01%
B 11894 10331 58 58 0.49% 0.56%
C 11894 10331 1 1 0.01% 0.01%
D 11894 10331 35 35 0.29% 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 15 174 74015 304.03 1197 1170 239.6
A 9 143 47734 194.34 1197 1170 239.6
A 0 226 10506 38.96 1197 1170 239.6
B 0 229 470486 2075.13 1199 1169 226.2
B 15 35 305728 1346.64 1199 1169 226.2
B 0 85 240488 1058.17 1199 1169 226.2
C 3 233 1685055 6281.18 1152 1156 268.1
C 14 238 177402 657.42 1152 1156 268.1
C 3 232 45612 165.83 1152 1156 268.1
D 1 52 266757 930.46 1165 1128 285.5
D 10 70 216272 753.62 1165 1128 285.5
D 2 33 66969 230.63 1165 1128 285.5

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