ASTROSAT CZTI

Data Quality Report

Orbit 19586

Creation date: 2024-06-27T18:04:28.976200
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/AS1T03_037T01_9000002912_19586cztM0_level2.evt modeM0/AS1T03_037T01_9000002912_19586cztM0_level2_quad_clean.evt
Size (bytes)1,073,897,280204,396,480
Size1.0 GB 194.9 MB
Events in quadrant A7,160,8831,329,228
Events in quadrant B7,192,3121,348,550
Events in quadrant C7,008,4501,298,711
Events in quadrant D10,229,2661,261,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297452
B0297192
C0290492
D0393522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137951691.225082%
B137961681.217744%
C137962241.623659%
D137967995.791534%

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 16305 13797 45 45 0.28% 0.33%
B 16306 13798 29 29 0.18% 0.21%
C 16306 13798 16 16 0.10% 0.12%
D 16306 13798 665 665 4.08% 4.82%

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 5 16 319800 929.48 1729 1698 342.2
A 13 210 152461 440.52 1729 1698 342.2
A 4 2 24726 67.29 1729 1698 342.2
B 15 32 114140 358.94 1713 1674 313.3
B 0 197 105444 331.19 1713 1674 313.3
B 7 220 82084 256.63 1713 1674 313.3
C 14 238 262337 685.15 1674 1688 380.4
C 3 233 72854 187.07 1674 1688 380.4
C 0 207 60634 154.95 1674 1688 380.4
D 13 104 1567817 3915.84 1667 1622 400.0
D 1 52 1391750 3475.64 1667 1622 400.0
D 7 238 394876 983.22 1667 1622 400.0

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