ASTROSAT CZTI

Data Quality Report

Orbit 20170128_G05_246T03_9000000990_level2

Creation date: 2025-11-09T07:27:21.183850
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_246T03_9000000990cztM0_level2.fits modeM0/AS1G05_246T03_9000000990cztM0_level2_quad_clean.evt
Size (bytes)1,117,293,1201,137,994,560
Size1.0 GB 1.1 GB
Events in quadrant A6,703,0286,796,968
Events in quadrant B6,470,9586,767,228
Events in quadrant C6,656,8646,571,901
Events in quadrant D5,672,3985,997,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02541670
B02746800
C02744610
D02857500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024700
B024700
C024700
D024700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12159416241.335592%
B12160235152.890577%
C1215909170.754174%
D12159532722.690900%

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 140683 121620 0 0 0.00% 0.00%
B 140683 121285 0 0 0.00% 0.00%
C 140683 121611 0 0 0.00% 0.00%
D 140683 121480 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 6492 10.94 1744 1627 444.8
A 7 110 5725 9.21 1744 1627 444.8
A 0 30 5014 7.61 1744 1627 444.8
B 2 9 5821 12.35 1708 1624 339.8
B 5 128 4339 7.99 1708 1624 339.8
B 14 254 4335 7.98 1708 1624 339.8
C 1 80 4815 6.84 1759 1626 466.5
C 1 81 4778 6.76 1759 1626 466.5
C 12 241 4596 6.37 1759 1626 466.5
D 3 14 4277 6.39 1620 1469 439.5
D 6 231 4206 6.23 1620 1469 439.5
D 7 5 4161 6.12 1620 1469 439.5

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