ASTROSAT CZTI

Data Quality Report

Orbit 11027

Creation date: 2024-06-27T16:07:13.951795
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/AS1G08_046T09_9000001600_11027cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11027cztM0_level2_quad_clean.evt
Size (bytes)568,434,24076,821,120
Size542.1 MB 73.3 MB
Events in quadrant A5,273,778463,438
Events in quadrant B4,120,769489,146
Events in quadrant C3,152,161484,878
Events in quadrant D4,245,870452,691

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199993
B0163182
C0135962
D0167672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62462534.050592%
B62463495.587576%
C62461001.601025%
D62462273.634326%

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 7486 6246 194 194 2.59% 3.11%
B 7486 6246 211 211 2.82% 3.38%
C 7486 6246 49 49 0.65% 0.78%
D 7486 6246 199 199 2.66% 3.19%

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 1546419 8893.73 846 832 173.8
A 8 5 446945 2567.05 846 832 173.8
A 0 12 13519 73.0 846 832 173.8
B 4 239 836978 5320.22 823 808 157.2
B 4 81 28912 178.81 823 808 157.2
B 0 214 20989 128.4 823 808 157.2
C 12 4 15302 77.91 802 811 186.0
C 14 234 8708 42.46 802 811 186.0
C 13 61 5577 25.62 802 811 186.0
D 11 129 350890 1773.58 814 796 197.4
D 8 195 240587 1214.78 814 796 197.4
D 2 14 198024 999.16 814 796 197.4

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