ASTROSAT CZTI

Data Quality Report

Orbit 03964

Creation date: 2024-06-27T14:35:44.308898
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/AS1G05_229T02_9000000508_03964cztM0_level2.evt modeM0/AS1G05_229T02_9000000508_03964cztM0_level2_quad_clean.evt
Size (bytes)339,554,88046,215,360
Size323.8 MB 44.1 MB
Events in quadrant A2,162,045281,121
Events in quadrant B2,420,217281,360
Events in quadrant C2,284,148277,440
Events in quadrant D3,119,923252,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092262
B099241
C096541
D0122331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4358240.550711%
B4358591.353832%
C4358541.239101%
D43582866.562643%

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 5598 4359 1 1 0.02% 0.02%
B 5598 4359 25 25 0.45% 0.57%
C 5598 4359 36 36 0.64% 0.83%
D 5598 4359 199 199 3.55% 4.57%

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 0 118 70600 649.29 526 516 107.9
A 4 48 19206 173.15 526 516 107.9
A 13 251 16226 145.54 526 516 107.9
B 15 204 116760 1137.04 530 519 102.2
B 3 0 87744 853.21 530 519 102.2
B 10 16 82014 797.16 530 519 102.2
C 14 234 285698 2382.72 506 510 119.7
C 10 65 9470 74.86 506 510 119.7
C 9 144 6322 48.56 506 510 119.7
D 2 63 585245 4827.26 490 476 121.1
D 2 232 390517 3219.78 490 476 121.1
D 10 246 146859 1208.39 490 476 121.1

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