ASTROSAT CZTI

Data Quality Report

Orbit 20190303_A05_082T12_9000002754_level2

Creation date: 2025-11-28T10:43:49.962889
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_082T12_9000002754cztM0_level2.fits modeM0/AS1A05_082T12_9000002754cztM0_level2_quad_clean.evt
Size (bytes)196,165,440171,751,680
Size187.1 MB 163.8 MB
Events in quadrant A1,139,718906,947
Events in quadrant B1,201,5241,047,813
Events in quadrant C1,233,7961,016,005
Events in quadrant D1,015,102881,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04020
B04020
C04020
D04020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680980
B0437360
C0414730
D0689270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19567315116.103644%
B195674582.340676%
C195673091.579189%
D19567246412.592630%

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 24447 19530 0 0 0.00% 0.00%
B 24447 19564 0 0 0.00% 0.00%
C 24447 19567 0 0 0.00% 0.00%
D 24447 19563 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 29 933 8.73 297 280 74.8
A 7 110 932 8.72 297 280 74.8
A 9 19 850 7.62 297 280 74.8
B 2 9 996 10.66 317 303 65.0
B 5 128 819 7.94 317 303 65.0
B 2 8 789 7.48 317 303 65.0
C 1 81 948 7.6 325 305 84.7
C 1 80 932 7.41 325 305 84.7
C 9 242 851 6.45 325 305 84.7
D 10 190 785 6.63 289 264 78.6
D 6 231 758 6.29 289 264 78.6
D 3 14 734 5.98 289 264 78.6

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