ASTROSAT CZTI

Data Quality Report

Orbit 11525

Creation date: 2024-06-27T16:14:15.075960
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/AS1A04_022T05_9000001690_11525cztM0_level2.evt modeM0/AS1A04_022T05_9000001690_11525cztM0_level2_quad_clean.evt
Size (bytes)672,079,68095,840,640
Size640.9 MB 91.4 MB
Events in quadrant A7,114,194547,219
Events in quadrant B5,030,358597,368
Events in quadrant C3,233,014651,596
Events in quadrant D4,493,096608,058

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261292
B0197141
C0146121
D0180831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7147119916.776270%
B71474105.736673%
C7147100.139919%
D71471321.846929%

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 7553 7149 700 700 9.27% 9.79%
B 7553 7149 257 257 3.40% 3.59%
C 7553 7149 0 0 0.00% 0.00%
D 7553 7149 91 91 1.20% 1.27%

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 8 5 3776876 24006.99 770 752 157.3
A 9 143 114827 725.24 770 752 157.3
A 1 162 95717 603.75 770 752 157.3
B 4 239 1429266 9090.89 819 800 157.1
B 11 51 150410 952.13 819 800 157.1
B 15 204 106957 675.59 819 800 157.1
C 13 61 6009 26.83 828 832 193.0
C 12 4 3387 13.24 828 832 193.0
C 3 202 2018 6.15 828 832 193.0
D 13 152 910525 4615.77 821 800 197.1
D 1 52 233005 1178.16 821 800 197.1
D 2 120 121649 613.16 821 800 197.1

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