ASTROSAT CZTI

Data Quality Report

Orbit 07846

Creation date: 2024-06-27T15:24:44.214945
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/AS1G06_077T02_9000001076_07846cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07846cztM0_level2_quad_clean.evt
Size (bytes)473,918,40095,112,000
Size452.0 MB 90.7 MB
Events in quadrant A3,142,988600,480
Events in quadrant B3,361,069621,559
Events in quadrant C4,074,298609,681
Events in quadrant D3,318,679580,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138123
B0143652
C0167462
D0144832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709220.327918%
B6709450.670741%
C67091031.535251%
D6709240.357728%

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 7904 6710 4 4 0.05% 0.06%
B 7904 6710 7 7 0.09% 0.10%
C 7904 6710 33 33 0.42% 0.49%
D 7904 6710 8 8 0.10% 0.12%

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 16249 94.54 808 793 163.5
A 0 128 12353 70.71 808 793 163.5
A 0 226 7504 41.05 808 793 163.5
B 4 239 80752 517.87 819 803 154.4
B 4 173 37886 240.21 819 803 154.4
B 15 204 19362 120.22 819 803 154.4
C 1 16 944279 5090.74 799 803 185.3
C 8 229 8926 43.83 799 803 185.3
C 13 61 6212 29.19 799 803 185.3
D 13 137 163553 840.06 796 776 193.8
D 2 152 34289 172.95 796 776 193.8
D 1 52 26863 134.63 796 776 193.8

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