ASTROSAT CZTI

Data Quality Report

Orbit 21526

Creation date: 2024-06-27T18:29:00.019583
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_144T02_9000003176_21526cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21526cztM0_level2_quad_clean.evt
Size (bytes)507,876,480103,147,200
Size484.3 MB 98.4 MB
Events in quadrant A3,201,848672,323
Events in quadrant B3,445,459677,196
Events in quadrant C3,927,497658,642
Events in quadrant D4,351,693649,100

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136722
B0143752
C0157962
D0172342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695961.433906%
B66941241.852405%
C66943214.795339%
D66951782.658701%

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 7560 6696 0 0 0.00% 0.00%
B 7559 6695 5 5 0.07% 0.07%
C 7559 6695 125 125 1.65% 1.87%
D 7560 6696 102 102 1.35% 1.52%

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 48 29266 172.64 823 808 164.8
A 13 254 10791 60.56 823 808 164.8
A 0 226 7149 38.47 823 808 164.8
B 6 36 92203 594.36 811 791 153.8
B 0 190 82699 532.56 811 791 153.8
B 0 230 30653 194.16 811 791 153.8
C 3 233 776466 4335.61 776 781 178.9
C 14 238 125733 698.41 776 781 178.9
C 13 61 5480 26.26 776 781 178.9
D 1 52 711755 3557.32 789 770 199.9
D 14 35 236132 1177.6 789 770 199.9
D 7 38 158947 791.42 789 770 199.9

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