ASTROSAT CZTI

Data Quality Report

Orbit 20161202_G06_169T01_9000000846_level2

Creation date: 2025-11-08T02:12:38.430149
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/AS1G06_169T01_9000000846cztM0_level2.fits modeM0/AS1G06_169T01_9000000846cztM0_level2_quad_clean.evt
Size (bytes)96,154,56087,742,080
Size91.7 MB 83.7 MB
Events in quadrant A556,196499,904
Events in quadrant B555,016494,544
Events in quadrant C568,108475,628
Events in quadrant D492,490446,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275100
B0238820
C0220700
D0249650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02180
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106598427.899428%
B106753162.960187%
C106911611.505940%
D106773132.931535%

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 11217 10768 0 0 0.00% 0.00%
B 11217 10780 0 0 0.00% 0.00%
C 11217 10787 0 0 0.00% 0.00%
D 11217 10775 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 14 188 561 10.97 144 135 38.8
A 0 29 554 10.79 144 135 38.8
A 7 110 498 9.35 144 135 38.8
B 2 9 485 10.9 146 138 31.8
B 14 254 399 8.19 146 138 31.8
B 3 17 385 7.76 146 138 31.8
C 2 191 391 6.07 150 138 41.7
C 1 80 389 6.02 150 138 41.7
C 1 81 388 6.0 150 138 41.7
D 3 14 397 6.83 140 126 39.7
D 3 30 384 6.5 140 126 39.7
D 4 160 373 6.22 140 126 39.7

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