ASTROSAT CZTI

Data Quality Report

Orbit 52015

Creation date: 2025-05-10T22:13:27.420452
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_011T06_9000006468_52015cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52015cztM0_level2_quad_clean.evt
Size (bytes)721,537,92082,074,240
Size688.1 MB 78.3 MB
Events in quadrant A5,063,268559,645
Events in quadrant B5,884,035590,380
Events in quadrant C5,853,659510,121
Events in quadrant D9,427,720390,645

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192511
B0217901
C0216831
D0323381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62154757.642800%
B621668711.052124%
C621681213.063063%
D6215191030.732100%

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 7225 6215 391 391 5.41% 6.29%
B 7226 6216 420 420 5.81% 6.76%
C 7226 6216 781 781 10.81% 12.56%
D 7224 6214 2058 2058 28.49% 33.12%

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 4 95 1481631 9380.08 635 619 157.9
A 3 14 324395 2050.66 635 619 157.9
A 4 3 278560 1760.36 635 619 157.9
B 7 0 1482708 11086.5 632 610 133.7
B 12 32 638357 4770.52 632 610 133.7
B 0 171 248177 1851.87 632 610 133.7
C 15 224 2109530 12525.93 607 601 168.4
C 4 5 458929 2722.23 607 601 168.4
C 13 3 412300 2445.28 607 601 168.4
D 12 17 4208874 27016.96 545 521 155.8
D 6 42 1492469 9578.07 545 521 155.8
D 8 176 556065 3566.5 545 521 155.8

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