ASTROSAT CZTI

Data Quality Report

Orbit 11028

Creation date: 2024-06-27T16:07:14.903265
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_11028cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11028cztM0_level2_quad_clean.evt
Size (bytes)510,289,92092,917,440
Size486.7 MB 88.6 MB
Events in quadrant A3,771,919605,994
Events in quadrant B4,406,630603,234
Events in quadrant C3,019,545600,523
Events in quadrant D3,831,339567,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151293
B0172012
C0131032
D0154352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260751.198083%
B62603705.910543%
C6260320.511182%
D62601312.092652%

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 7580 6261 28 28 0.37% 0.45%
B 7580 6260 209 209 2.76% 3.34%
C 7580 6261 2 2 0.03% 0.03%
D 7580 6261 103 103 1.36% 1.65%

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 347705 2172.63 804 789 159.7
A 15 174 310072 1936.95 804 789 159.7
A 0 12 12580 73.84 804 789 159.7
B 4 239 1177344 7971.99 792 776 147.6
B 4 81 75291 504.89 792 776 147.6
B 0 214 30208 199.42 792 776 147.6
C 12 4 15220 82.52 768 772 175.1
C 13 61 5640 27.8 768 772 175.1
C 5 207 4117 19.1 768 772 175.1
D 11 129 207613 1140.83 762 743 181.3
D 14 34 169853 932.59 762 743 181.3
D 10 253 145179 796.52 762 743 181.3

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