ASTROSAT CZTI

Data Quality Report

Orbit 41078

Creation date: 2024-06-27T22:24:10.531548
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/AS1A12_095T02_9000005596_41078cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41078cztM0_level2_quad_clean.evt
Size (bytes)327,093,12090,184,320
Size311.9 MB 86.0 MB
Events in quadrant A3,034,891602,372
Events in quadrant B3,136,264608,273
Events in quadrant C2,759,642589,428
Events in quadrant D2,746,707543,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121903
B0129212
C0115662
D0119632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5522130.235422%
B55221442.607751%
C5522380.688156%
D5522250.452735%

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 7134 5523 3 3 0.04% 0.05%
B 7134 5523 111 111 1.56% 2.01%
C 7134 5523 26 26 0.36% 0.47%
D 7134 5523 17 17 0.24% 0.31%

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 540100 4189.63 622 607 128.8
A 12 189 70025 539.09 622 607 128.8
A 13 254 10703 78.4 622 607 128.8
B 0 186 356445 2943.52 610 593 120.9
B 15 85 164790 1358.2 610 593 120.9
B 0 190 117140 964.05 610 593 120.9
C 15 214 239629 1686.36 603 607 141.7
C 14 254 110119 772.64 603 607 141.7
C 0 10 31625 218.84 603 607 141.7
D 13 249 108350 728.69 603 584 147.9
D 2 16 106567 716.64 603 584 147.9
D 13 171 79202 531.6 603 584 147.9

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