ASTROSAT CZTI

Data Quality Report

Orbit 20190309_A05_118T04_9000002782_level2

Creation date: 2025-11-28T16:43:18.846107
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/AS1A05_118T04_9000002782cztM0_level2.fits modeM0/AS1A05_118T04_9000002782cztM0_level2_quad_clean.evt
Size (bytes)196,056,000151,390,080
Size187.0 MB 144.4 MB
Events in quadrant A1,225,864863,118
Events in quadrant B1,186,830875,154
Events in quadrant C1,225,824839,908
Events in quadrant D1,068,670775,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403780
B0393630
C0401680
D0472980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178493802.128971%
B178492921.635946%
C178493912.190599%
D178495493.075803%

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 22669 17844 0 0 0.00% 0.00%
B 22669 17845 0 0 0.00% 0.00%
C 22669 17845 0 0 0.00% 0.00%
D 22669 17845 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 29 981 8.58 319 301 79.3
A 9 19 961 8.33 319 301 79.3
A 7 110 910 7.68 319 301 79.3
B 2 9 941 9.92 313 299 64.7
B 2 8 831 8.22 313 299 64.7
B 5 225 781 7.45 313 299 64.7
C 1 81 925 7.51 323 305 82.5
C 1 80 870 6.85 323 305 82.5
C 12 241 839 6.47 323 305 82.5
D 10 190 821 6.71 304 279 80.8
D 10 189 793 6.36 304 279 80.8
D 6 231 749 5.82 304 279 80.8

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