ASTROSAT CZTI

Data Quality Report

Orbit 20170716_A03_119T01_9000001388_level2

Creation date: 2026-03-11T16:57:11.714389
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/AS1A03_119T01_9000001388cztM0_level2.fits modeM0/AS1A03_119T01_9000001388cztM0_level2_quad_clean.evt
Size (bytes)455,783,040379,434,240
Size434.7 MB 361.9 MB
Events in quadrant A2,762,4862,138,089
Events in quadrant B2,688,3682,169,062
Events in quadrant C2,692,3722,030,560
Events in quadrant D2,318,1401,811,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0730
B0730
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0999920
B0997860
C0998020
D01159880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09900
B09980
C09920
D09880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486954680.961084%
B486865921.215955%
C487004250.872690%
D4862121904.504227%

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 56406 49160 0 0 0.00% 0.00%
B 56406 49155 0 0 0.00% 0.00%
C 56406 49155 0 0 0.00% 0.00%
D 56406 49071 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 2803 11.63 717 668 183.5
A 0 29 2567 10.35 717 668 183.5
A 14 204 2389 9.38 717 668 183.5
B 2 9 2202 10.71 705 669 143.2
B 5 225 1781 7.77 705 669 143.2
B 3 17 1778 7.75 705 669 143.2
C 1 80 2006 7.13 711 660 188.8
C 1 81 1918 6.66 711 660 188.8
C 12 241 1884 6.48 711 660 188.8
D 6 231 1662 5.96 659 597 178.7
D 1 19 1648 5.88 659 597 178.7
D 7 5 1634 5.8 659 597 178.7

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