ASTROSAT CZTI

Data Quality Report

Orbit 34768

Creation date: 2022-03-04T09:59:25.513964
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/AS1C07_004T01_9000004990_34768cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34768cztM0_level2_quad_clean.evt
Size (bytes)505,800,00065,283,840
Size482.4 MB 62.3 MB
Events in quadrant A4,484,047392,130
Events in quadrant B3,026,393420,254
Events in quadrant C3,102,437409,259
Events in quadrant D4,337,127374,075

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169313
B0121482
C0122202
D0166542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54431973.619328%
B5443400.734889%
C5443420.771633%
D5443280.514422%

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 7386 5444 213 213 2.88% 3.91%
B 7386 5444 25 25 0.34% 0.46%
C 7386 5444 32 32 0.43% 0.59%
D 7386 5444 27 27 0.37% 0.50%

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 15 169 1817492 13497.3 669 656 134.6
A 10 83 46466 340.32 669 656 134.6
A 15 174 24824 179.54 669 656 134.6
B 5 172 123318 940.68 686 670 130.4
B 5 255 59439 450.75 686 670 130.4
B 0 190 57222 433.74 686 670 130.4
C 15 214 233091 1494.04 672 678 155.6
C 0 10 130188 832.54 672 678 155.6
C 0 207 78544 500.55 672 678 155.6
D 8 195 1264693 7912.37 657 641 159.8
D 12 227 367777 2298.1 657 641 159.8
D 13 249 55070 340.7 657 641 159.8

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