ASTROSAT CZTI

Data Quality Report

Orbit 54751

Creation date: 2025-11-11T03:11:23.403034
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/AS1A14_103T01_9000006524_54751cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54751cztM0_level2_quad_clean.evt
Size (bytes)505,923,84096,344,640
Size482.5 MB 91.9 MB
Events in quadrant A3,330,674648,567
Events in quadrant B5,086,499664,714
Events in quadrant C5,108,707566,091
Events in quadrant D4,671,762562,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148282
B0196822
C0201762
D0188772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191191.745124%
B68195047.391113%
C681877511.366970%
D68183975.822822%

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 7654 6819 22 22 0.29% 0.32%
B 7654 6819 361 361 4.72% 5.29%
C 7653 6819 511 511 6.68% 7.49%
D 7653 6818 351 351 4.59% 5.15%

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 3 14 144462 787.01 738 719 182.6
A 0 8 119303 649.26 738 719 182.6
A 12 115 87833 476.96 738 719 182.6
B 2 249 1832016 11950.88 715 692 153.2
B 0 213 155714 1011.64 715 692 153.2
B 5 185 91792 594.5 715 692 153.2
C 4 5 1260490 6854.52 676 671 183.8
C 9 38 355684 1931.58 676 671 183.8
C 12 252 263357 1429.24 676 671 183.8
D 11 129 780251 3899.95 698 668 199.9
D 3 12 712182 3559.43 698 668 199.9
D 6 239 156496 779.55 698 668 199.9

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