ASTROSAT CZTI

Data Quality Report

Orbit 20200105_A07_138T05_9000003410_level2

Creation date: 2025-12-08T02:39:55.996081
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/AS1A07_138T05_9000003410cztM0_level2.fits modeM0/AS1A07_138T05_9000003410cztM0_level2_quad_clean.evt
Size (bytes)410,192,640368,205,120
Size391.2 MB 351.1 MB
Events in quadrant A2,482,8282,093,910
Events in quadrant B2,432,8162,192,995
Events in quadrant C2,494,9182,094,165
Events in quadrant D2,164,7881,922,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08420
B08420
C08420
D08420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01056030
B0894010
C0911260
D01091160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4146120294.893756%
B414616571.584622%
C414619152.206893%
D4146114213.427317%

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 47171 41454 0 0 0.00% 0.00%
B 47171 41459 0 0 0.00% 0.00%
C 47171 41460 0 0 0.00% 0.00%
D 47171 41455 0 0 0.00% 0.00%

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 0 29 2298 10.52 645 606 160.9
A 7 110 2086 9.2 645 606 160.9
A 14 79 1793 7.38 645 606 160.9
B 2 9 1973 10.42 645 614 130.5
B 3 80 1697 8.3 645 614 130.5
B 2 8 1656 7.99 645 614 130.5
C 1 80 1951 7.88 659 618 169.1
C 1 81 1895 7.55 659 618 169.1
C 12 241 1712 6.47 659 618 169.1
D 4 246 1627 6.44 617 562 165.4
D 7 3 1512 5.74 617 562 165.4
D 10 189 1499 5.66 617 562 165.4

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