ASTROSAT CZTI

Data Quality Report

Orbit 25148

Creation date: 2024-06-27T19:14:36.027360
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/AS1A07_018T09_9000003682_25148cztM0_level2.evt modeM0/AS1A07_018T09_9000003682_25148cztM0_level2_quad_clean.evt
Size (bytes)122,065,92032,549,760
Size116.4 MB 31.0 MB
Events in quadrant A803,748217,218
Events in quadrant B900,765219,777
Events in quadrant C895,393212,327
Events in quadrant D976,185208,819

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036750
B038970
C037740
D040410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1737543.108808%
B17371035.929764%
C1737683.914796%
D1737553.166379%

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 2067 1737 0 0 0.00% 0.00%
B 2067 1737 14 14 0.68% 0.81%
C 2067 1737 0 0 0.00% 0.00%
D 2067 1737 10 10 0.48% 0.58%

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 13 254 2743 57.27 208 203 44.3
A 3 137 2018 40.92 208 203 44.3
A 0 226 1740 34.66 208 203 44.3
B 3 64 89767 2140.57 206 201 41.8
B 12 111 5120 117.56 206 201 41.8
B 11 111 4517 103.15 206 201 41.8
C 7 247 61663 1261.06 200 202 48.7
C 14 238 31442 640.98 200 202 48.7
C 9 54 17319 351.21 200 202 48.7
D 1 52 137006 2710.28 201 195 50.5
D 8 195 72735 1437.04 201 195 50.5
D 2 234 6737 129.6 201 195 50.5

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