ASTROSAT CZTI

Data Quality Report

Orbit 37799

Creation date: 2024-06-27T21:44:37.157140
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/AS1A10_103T06_9000005348_37799cztM0_level2.evt modeM0/AS1A10_103T06_9000005348_37799cztM0_level2_quad_clean.evt
Size (bytes)485,657,28068,581,440
Size463.2 MB 65.4 MB
Events in quadrant A3,068,566436,529
Events in quadrant B3,556,786429,872
Events in quadrant C2,835,445439,366
Events in quadrant D4,873,449384,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124583
B0141172
C0118092
D0182492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5511490.889131%
B55112324.209762%
C5511290.526220%
D551160210.923607%

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 7274 5512 35 35 0.48% 0.63%
B 7274 5512 190 190 2.61% 3.45%
C 7274 5512 26 26 0.36% 0.47%
D 7274 5512 515 515 7.08% 9.34%

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 10 83 357045 2814.66 624 613 126.6
A 15 222 160435 1262.08 624 613 126.6
A 9 143 101227 794.52 624 613 126.6
B 5 172 666665 5707.72 612 597 116.7
B 0 229 312059 2669.0 612 597 116.7
B 0 230 63385 538.05 612 597 116.7
C 15 214 248895 1758.75 604 606 141.2
C 0 10 131466 926.95 604 606 141.2
C 0 207 79601 559.56 604 606 141.2
D 13 249 1524467 10827.67 573 558 140.7
D 1 52 260284 1845.4 573 558 140.7
D 5 157 209176 1482.27 573 558 140.7

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