ASTROSAT CZTI

Data Quality Report

Orbit 23153

Creation date: 2024-06-27T18:50:36.250761
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/AS1A08_009T01_9000003422_23153cztM0_level2.evt modeM0/AS1A08_009T01_9000003422_23153cztM0_level2_quad_clean.evt
Size (bytes)970,539,840188,406,720
Size925.6 MB 179.7 MB
Events in quadrant A6,567,7021,186,516
Events in quadrant B6,720,8481,215,390
Events in quadrant C6,822,9851,168,621
Events in quadrant D8,300,6821,135,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293492
B0295872
C0297212
D0343402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144901741.200828%
B144911901.311159%
C144912221.531985%
D144913792.615416%

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 15320 14491 0 0 0.00% 0.00%
B 15321 14493 5 5 0.03% 0.03%
C 15321 14491 13 13 0.08% 0.09%
D 15321 14493 207 207 1.35% 1.43%

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 6 16 28792 79.31 1696 1657 342.1
A 13 254 18993 50.67 1696 1657 342.1
A 3 137 15341 40.0 1696 1657 342.1
B 0 190 47360 142.15 1688 1640 321.6
B 12 111 39838 118.77 1688 1640 321.6
B 11 111 35874 106.44 1688 1640 321.6
C 14 238 257202 675.25 1623 1630 378.5
C 0 10 104801 272.59 1623 1630 378.5
C 9 15 69107 178.28 1623 1630 378.5
D 1 52 1246030 3127.26 1642 1591 397.9
D 7 238 165870 412.83 1642 1591 397.9
D 13 153 158311 393.84 1642 1591 397.9

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