ASTROSAT CZTI

Data Quality Report

Orbit 20701

Creation date: 2024-06-27T18:18:34.562250
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/AS1A05_165T07_9000003062_20701cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20701cztM0_level2_quad_clean.evt
Size (bytes)512,893,44090,616,320
Size489.1 MB 86.4 MB
Events in quadrant A3,055,549598,440
Events in quadrant B3,528,692586,825
Events in quadrant C3,014,831564,652
Events in quadrant D5,500,422548,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131591
B0146491
C0131441
D0207171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393170.265916%
B63931282.002190%
C6394350.547388%
D63942924.566781%

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 7308 6394 2 2 0.03% 0.03%
B 7308 6394 64 64 0.88% 1.00%
C 7309 6395 0 0 0.00% 0.00%
D 7309 6395 257 257 3.52% 4.02%

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 9 143 13226 78.3 789 772 159.0
A 5 16 9931 57.59 789 772 159.0
A 0 226 6875 38.37 789 772 159.0
B 7 220 339289 2279.02 776 757 148.5
B 0 190 46534 308.17 776 757 148.5
B 5 172 28671 187.92 776 757 148.5
C 14 238 115766 670.72 738 742 171.5
C 3 233 10231 55.33 738 742 171.5
C 7 247 5953 30.39 738 742 171.5
D 5 222 1086078 6013.45 746 726 180.5
D 12 227 964797 5341.49 746 726 180.5
D 7 38 357423 1976.3 746 726 180.5

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