ASTROSAT CZTI

Data Quality Report

Orbit 20160604_G05_182T01_9000000484_level2

Creation date: 2025-10-30T18:29:40.600648
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/AS1G05_182T01_9000000484cztM0_level2.fits modeM0/AS1G05_182T01_9000000484cztM0_level2_quad_clean.evt
Size (bytes)452,027,520476,236,800
Size431.1 MB 454.2 MB
Events in quadrant A2,757,4763,024,418
Events in quadrant B2,671,9862,960,549
Events in quadrant C2,405,9522,247,211
Events in quadrant D2,393,1522,739,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01201370
B01253560
C02025350
D01087770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5029424644.899193%
B5029426425.253112%
C502941537730.574224%
D502946781.348073%

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 59819 50048 0 0 0.00% 0.00%
B 59819 50283 0 0 0.00% 0.00%
C 59819 50285 0 0 0.00% 0.00%
D 59818 50275 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 2641 10.55 718 667 187.1
A 7 110 2250 8.46 718 667 187.1
A 0 30 2061 7.45 718 667 187.1
B 2 9 2243 10.84 705 669 145.2
B 12 226 2060 9.58 705 669 145.2
B 14 254 1858 8.19 705 669 145.2
C 1 80 1685 6.38 635 584 172.6
C 1 81 1636 6.1 635 584 172.6
C 9 188 1619 6.0 635 584 172.6
D 11 82 1997 7.4 684 618 186.4
D 6 231 1731 5.97 684 618 186.4
D 7 3 1705 5.83 684 618 186.4

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