ASTROSAT CZTI

Data Quality Report

Orbit 16176

Creation date: 2024-06-27T17:18:58.113262
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/AS1T02_109T01_9000002386_16176cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16176cztM0_level2_quad_clean.evt
Size (bytes)338,765,76053,853,120
Size323.1 MB 51.4 MB
Events in quadrant A2,485,594320,595
Events in quadrant B2,439,663335,257
Events in quadrant C2,347,706318,427
Events in quadrant D2,652,165311,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011508996
B011202708
C010856730
D012089726

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01088
B01088
C01086
D01086

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4875430.882051%
B4916521.057771%
C4903591.203345%
D4914901.831502%

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 5970 4963 7 7 0.12% 0.14%
B 6022 4988 1 1 0.02% 0.02%
C 5970 4982 0 0 0.00% 0.00%
D 5964 4986 62 62 1.04% 1.24%

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 15 174 115473 954.64 585 572 120.4
A 15 239 67360 554.9 585 572 120.4
A 0 253 31782 259.3 585 572 120.4
B 0 229 45166 389.59 589 574 114.5
B 4 216 31328 268.69 589 574 114.5
B 10 16 20873 177.35 589 574 114.5
C 14 238 87738 657.45 560 563 132.6
C 7 247 38393 285.3 560 563 132.6
C 0 207 25280 186.41 560 563 132.6
D 2 33 289026 2077.15 566 548 138.9
D 7 38 128824 923.63 566 548 138.9
D 15 0 27227 192.1 566 548 138.9

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