ASTROSAT CZTI

Data Quality Report

Orbit 25409

Creation date: 2024-06-27T19:17:21.019261
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/AS1A09_047T01_9000003714_25409cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25409cztM0_level2_quad_clean.evt
Size (bytes)597,199,680104,250,240
Size569.5 MB 99.4 MB
Events in quadrant A3,886,393684,448
Events in quadrant B3,688,567689,061
Events in quadrant C3,552,253657,807
Events in quadrant D6,451,121604,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163610
B0157500
C0154370
D0244110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7494460.613824%
B7493640.854131%
C7493580.774056%
D749382611.023622%

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 7904 7495 3 3 0.04% 0.04%
B 7903 7494 17 17 0.22% 0.23%
C 7903 7493 0 0 0.00% 0.00%
D 7903 7493 737 737 9.33% 9.84%

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 6 16 365468 1981.67 906 887 184.0
A 13 254 11646 58.48 906 887 184.0
A 14 250 8812 43.08 906 887 184.0
B 3 112 146915 850.95 896 871 171.6
B 12 111 20998 117.27 896 871 171.6
B 0 229 18912 105.12 896 871 171.6
C 14 238 135817 676.01 853 857 199.6
C 7 87 34480 168.42 853 857 199.6
C 7 247 26293 127.41 853 857 199.6
D 7 238 1355353 6704.07 829 802 202.0
D 12 233 1077230 5327.56 829 802 202.0
D 8 195 799766 3954.31 829 802 202.0

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