ASTROSAT CZTI

Data Quality Report

Orbit 20170314_A02_029T01_9000001082_level2

Creation date: 2025-11-10T02:41:11.864015
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/AS1A02_029T01_9000001082cztM0_level2.fits modeM0/AS1A02_029T01_9000001082cztM0_level2_quad_clean.evt
Size (bytes)463,752,000454,386,240
Size442.3 MB 433.3 MB
Events in quadrant A2,769,6602,683,627
Events in quadrant B2,708,3042,725,492
Events in quadrant C2,741,4062,577,889
Events in quadrant D2,365,2782,315,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01071580
B01073130
C01306340
D01165710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010380
B010680
C010720
D010720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0650
B0650
C0650
D0650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5036411022.188071%
B5023610462.082172%
C5024311772.342615%
D5020718003.585157%

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 59309 50688 0 0 0.00% 0.00%
B 59309 50542 0 0 0.00% 0.00%
C 59309 50537 0 0 0.00% 0.00%
D 59309 50463 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 14 188 2758 11.4 719 670 183.1
A 0 29 2629 10.7 719 670 183.1
A 14 204 2341 9.12 719 670 183.1
B 2 9 2354 11.73 713 677 142.9
B 3 17 1836 8.11 713 677 142.9
B 2 8 1799 7.85 713 677 142.9
C 12 241 1998 6.98 724 669 190.4
C 3 158 1885 6.39 724 669 190.4
C 9 188 1854 6.22 724 669 190.4
D 3 14 1791 6.46 674 610 182.7
D 6 231 1741 6.19 674 610 182.7
D 7 5 1678 5.85 674 610 182.7

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