ASTROSAT CZTI

Data Quality Report

Orbit 50812

Creation date: 2025-02-18T22:01:09.940921
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_001T01_9000006450_50812cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50812cztM0_level2_quad_clean.evt
Size (bytes)472,639,68086,705,280
Size450.7 MB 82.7 MB
Events in quadrant A4,428,275560,074
Events in quadrant B4,286,243597,851
Events in quadrant C3,694,224551,460
Events in quadrant D4,626,886502,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170871
B0167744
C0150991
D0178441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59194717.957425%
B59195409.123163%
C59191953.294475%
D59193646.149687%

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 7078 5919 527 527 7.45% 8.90%
B 7078 5919 352 352 4.97% 5.95%
C 7078 5919 135 135 1.91% 2.28%
D 7078 5919 309 309 4.37% 5.22%

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 80 941513 5953.35 636 621 158.0
A 6 161 414764 2620.43 636 621 158.0
A 4 3 125153 787.96 636 621 158.0
B 8 128 1149687 8778.83 624 604 130.9
B 4 206 394803 3011.62 624 604 130.9
B 0 171 46796 352.9 624 604 130.9
C 13 3 410546 2423.37 624 618 169.2
C 1 60 311749 1839.31 624 618 169.2
C 3 233 75086 440.23 624 618 169.2
D 2 216 655396 3836.14 613 592 170.7
D 2 249 395897 2315.88 613 592 170.7
D 8 176 248506 1452.39 613 592 170.7

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