ASTROSAT CZTI

Data Quality Report

Orbit 20190523_C04_009T05_9000002946_level2

Creation date: 2025-11-30T09:55:07.031989
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/AS1C04_009T05_9000002946cztM0_level2.fits modeM0/AS1C04_009T05_9000002946cztM0_level2_quad_clean.evt
Size (bytes)52,223,04046,820,160
Size49.8 MB 44.7 MB
Events in quadrant A314,662265,566
Events in quadrant B303,426264,549
Events in quadrant C305,272259,676
Events in quadrant D257,122226,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116520
B0120470
C0123620
D0162750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5740691.202091%
B5740701.219512%
C57401091.898955%
D57404537.891986%

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 5753 5738 0 0 0.00% 0.00%
B 5753 5738 0 0 0.00% 0.00%
C 5753 5738 0 0 0.00% 0.00%
D 5753 5712 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 29 333 11.17 82 76 23.0
A 9 19 258 7.91 82 76 23.0
A 0 30 254 7.74 82 76 23.0
B 2 9 249 9.39 80 76 18.4
B 2 8 220 7.82 80 76 18.4
B 14 254 215 7.54 80 76 18.4
C 12 241 252 7.92 80 75 22.3
C 1 80 224 6.67 80 75 22.3
C 9 233 220 6.49 80 75 22.3
D 1 3 195 6.11 73 67 20.9
D 15 142 190 5.87 73 67 20.9
D 3 14 188 5.78 73 67 20.9

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