ASTROSAT CZTI

Data Quality Report

Orbit 04952

Creation date: 2024-06-27T14:49:16.062796
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/AS1G05_157T01_9000000626_04952cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04952cztM0_level2_quad_clean.evt
Size (bytes)565,479,36072,648,000
Size539.3 MB 69.3 MB
Events in quadrant A4,886,431411,154
Events in quadrant B3,274,697464,628
Events in quadrant C2,692,371471,126
Events in quadrant D5,852,437420,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187762
B0139221
C0126661
D0216741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A618982013.249313%
B61891041.680401%
C6189160.258523%
D618965310.550978%

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 7178 6189 743 743 10.35% 12.01%
B 7179 6190 57 57 0.79% 0.92%
C 7179 6190 0 0 0.00% 0.00%
D 7178 6190 579 579 8.07% 9.35%

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 0 31 2057111 15416.26 655 642 133.4
A 4 2 214472 1602.97 655 642 133.4
A 0 50 84114 625.74 655 642 133.4
B 10 16 277552 1989.13 715 699 139.2
B 15 204 78441 558.56 715 699 139.2
B 4 80 37072 261.33 715 699 139.2
C 1 16 13353 80.34 683 686 157.7
C 12 4 9242 54.26 683 686 157.7
C 13 61 5590 31.1 683 686 157.7
D 2 33 1494358 9309.56 656 636 160.5
D 1 7 1148137 7151.75 656 636 160.5
D 13 235 174116 1081.21 656 636 160.5

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