ASTROSAT CZTI

Data Quality Report

Orbit 36316

Creation date: 2024-06-27T21:25:23.962720
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/AS1A11_089T02_9000005188_36316cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36316cztM0_level2_quad_clean.evt
Size (bytes)642,945,60077,443,200
Size613.2 MB 73.9 MB
Events in quadrant A2,538,722568,596
Events in quadrant B7,117,725455,376
Events in quadrant C2,687,312545,213
Events in quadrant D6,777,018411,050

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108382
B0247901
C0111491
D0235911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A518850.096376%
B5188157330.319969%
C5188230.443331%
D5188155329.934464%

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 6981 5189 0 0 0.00% 0.00%
B 6980 5188 1389 1389 19.90% 26.77%
C 6981 5189 21 21 0.30% 0.40%
D 6981 5189 1586 1586 22.72% 30.56%

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 145054 1147.88 618 607 125.8
A 13 254 7085 51.48 618 607 125.8
A 3 137 6208 44.51 618 607 125.8
B 5 172 3084324 30585.73 522 511 100.8
B 4 171 1291655 12805.77 522 511 100.8
B 5 236 365620 3621.21 522 511 100.8
C 15 214 216136 1577.95 585 589 136.6
C 0 10 100687 732.79 585 589 136.6
C 0 207 79455 577.35 585 589 136.6
D 12 227 4114514 34142.23 495 482 120.5
D 12 6 307136 2544.91 495 482 120.5
D 12 235 95152 785.66 495 482 120.5

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