ASTROSAT CZTI

Data Quality Report

Orbit 01100

Creation date: 2024-06-27T14:07:28.136155
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/AS1P01_997T02_9000000212_01100cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01100cztM0_level2_quad_clean.evt
Size (bytes)1,043,884,80097,096,320
Size995.5 MB 92.6 MB
Events in quadrant A7,436,479652,908
Events in quadrant B7,693,672654,200
Events in quadrant C8,176,506611,463
Events in quadrant D7,900,440592,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264822
B0272031
C0286671
D0279491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140460.749186%
B6140520.846906%
C61401963.192182%
D61404457.247557%

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 7300 6140 233 233 3.19% 3.79%
B 7300 6140 262 262 3.59% 4.27%
C 7300 6141 575 575 7.88% 9.36%
D 7300 6140 690 690 9.45% 11.24%

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 4 32 38050 77.8 1927 1939 464.2
A 11 79 6883 10.65 1927 1939 464.2
A 3 111 6069 8.9 1927 1939 464.2
B 4 187 77890 161.86 1982 1989 468.9
B 5 249 31726 63.41 1982 1989 468.9
B 15 22 20468 39.41 1982 1989 468.9
C 10 207 938314 1920.54 1756 1815 487.6
C 15 241 287315 585.49 1756 1815 487.6
C 10 5 29443 56.66 1756 1815 487.6
D 2 216 45262 85.43 1741 1779 509.0
D 10 125 28435 52.37 1741 1779 509.0
D 2 14 25893 47.38 1741 1779 509.0

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