ASTROSAT CZTI

Data Quality Report

Orbit 11337

Creation date: 2024-06-27T16:11:30.271939
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/AS1G08_062T01_9000001660_11337cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11337cztM0_level2_quad_clean.evt
Size (bytes)628,790,40074,185,920
Size599.7 MB 70.7 MB
Events in quadrant A4,329,161446,260
Events in quadrant B4,534,416431,091
Events in quadrant C3,288,315453,514
Events in quadrant D6,401,373411,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177253
B0183022
C0148992
D0240492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72191832.534977%
B72195337.383294%
C72191121.551461%
D7219110915.362239%

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 7359 7222 21 21 0.29% 0.29%
B 7359 7222 192 192 2.61% 2.66%
C 7359 7222 0 0 0.00% 0.00%
D 7359 7222 834 834 11.33% 11.55%

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 15 174 565816 3229.22 851 832 175.0
A 13 251 339613 1936.34 851 832 175.0
A 1 162 49919 280.56 851 832 175.0
B 4 239 968331 5980.33 836 816 161.8
B 3 64 138111 848.64 836 816 161.8
B 11 51 71037 434.04 836 816 161.8
C 14 234 7649 34.71 841 843 196.1
C 13 61 6207 27.35 841 843 196.1
C 12 4 3004 11.02 841 843 196.1
D 10 253 2707779 14388.6 769 745 188.1
D 1 52 324704 1721.93 769 745 188.1
D 7 80 120864 638.46 769 745 188.1

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