ASTROSAT CZTI

Data Quality Report

Orbit 50377

Creation date: 2025-01-21T09:15:26.146316
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/AS1C09_003T01_9000006442_50377cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50377cztM0_level2_quad_clean.evt
Size (bytes)569,234,88092,007,360
Size542.9 MB 87.7 MB
Events in quadrant A4,011,683621,205
Events in quadrant B3,546,788678,381
Events in quadrant C8,158,971490,639
Events in quadrant D4,856,350548,443

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161901
B0149281
C0287283
D0189791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64122353.665003%
B64131933.009512%
C6412147222.956956%
D64123485.427324%

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 7532 6413 134 134 1.78% 2.09%
B 7533 6414 69 69 0.92% 1.08%
C 7532 6413 1214 1214 16.12% 18.93%
D 7532 6413 245 245 3.25% 3.82%

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 10 253 198072 1109.42 706 687 177.9
A 13 248 187353 1049.17 706 687 177.9
A 7 221 170586 954.93 706 687 177.9
B 5 185 249906 1667.59 699 676 149.5
B 10 43 87364 580.03 699 676 149.5
B 1 238 77940 516.97 699 676 149.5
C 0 208 1498397 8600.24 623 619 174.2
C 15 235 783861 4497.37 623 619 174.2
C 12 247 722015 4142.25 623 619 174.2
D 7 61 708483 3820.79 664 642 185.3
D 3 12 359748 1938.39 664 642 185.3
D 8 192 204658 1101.24 664 642 185.3

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