ASTROSAT CZTI

Data Quality Report

Orbit 43462

Creation date: 2024-06-27T22:52:15.893509
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_018T01_9000005874_43462cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43462cztM0_level2_quad_clean.evt
Size (bytes)322,191,36085,173,120
Size307.3 MB 81.2 MB
Events in quadrant A3,369,430557,117
Events in quadrant B2,725,877586,572
Events in quadrant C2,354,893565,171
Events in quadrant D3,066,182501,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133382
B0117042
C0105712
D0130612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52601222.319392%
B5259220.418330%
C525930.057045%
D52591763.346644%

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 7263 5261 107 107 1.47% 2.03%
B 7262 5260 13 13 0.18% 0.25%
C 7262 5260 0 0 0.00% 0.00%
D 7262 5260 157 157 2.16% 2.98%

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 568162 5025.87 546 534 112.9
A 15 237 459806 4066.46 546 534 112.9
A 15 222 204529 1806.2 546 534 112.9
B 0 199 219921 2048.25 551 535 107.1
B 0 189 211068 1965.59 551 535 107.1
B 0 245 63726 589.97 551 535 107.1
C 15 214 232465 1835.33 540 541 126.4
C 3 233 8798 65.34 540 541 126.4
C 14 254 6489 47.07 540 541 126.4
D 13 249 360105 2776.76 526 509 129.5
D 1 52 318821 2457.97 526 509 129.5
D 9 49 213868 1647.54 526 509 129.5

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