ASTROSAT CZTI

Data Quality Report

Orbit 51146

Creation date: 2025-03-22T11:16:38.021560
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/AS1C07_001T02_9000006452_51146cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51146cztM0_level2_quad_clean.evt
Size (bytes)477,578,88079,453,440
Size455.5 MB 75.8 MB
Events in quadrant A3,876,685519,961
Events in quadrant B3,421,303570,671
Events in quadrant C6,139,002470,404
Events in quadrant D3,815,727461,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153052
B0140532
C0220832
D0152342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54861292.351440%
B54861602.916515%
C548668612.504557%
D54863165.760117%

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 6661 5487 86 86 1.29% 1.57%
B 6661 5487 91 91 1.37% 1.66%
C 6661 5487 615 615 9.23% 11.21%
D 6661 5487 289 289 4.34% 5.27%

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 12 3 587975 4135.81 570 556 142.0
A 4 4 304362 2138.99 570 556 142.0
A 12 80 146549 1027.89 570 556 142.0
B 5 185 301518 2483.97 571 553 121.2
B 12 32 221866 1826.58 571 553 121.2
B 4 171 188566 1551.74 571 553 121.2
C 12 247 2121260 14087.67 540 537 150.5
C 4 12 857915 5695.44 540 537 150.5
C 15 230 341315 2263.74 540 537 150.5
D 2 62 822280 5403.65 543 523 152.1
D 8 176 233356 1531.05 543 523 152.1
D 3 12 194337 1274.47 543 523 152.1

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