ASTROSAT CZTI

Data Quality Report

Orbit 24847

Creation date: 2024-06-27T19:10:34.013207
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/AS1A08_003T04_9000003634_24847cztM0_level2.evt modeM0/AS1A08_003T04_9000003634_24847cztM0_level2_quad_clean.evt
Size (bytes)1,228,383,360214,902,720
Size1.1 GB 204.9 MB
Events in quadrant A9,732,1231,351,173
Events in quadrant B8,375,4401,371,727
Events in quadrant C8,860,4961,303,426
Events in quadrant D9,056,4601,281,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402413
B0361423
C0375983
D0388283

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174133842.205249%
B174141690.970484%
C174142931.682554%
D174143271.877799%

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 19443 17416 337 337 1.73% 1.94%
B 19444 17417 5 5 0.03% 0.03%
C 19444 17417 11 11 0.06% 0.06%
D 19444 17417 216 216 1.11% 1.24%

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 6 16 1619163 3825.18 2101 2055 422.8
A 13 254 25506 55.47 2101 2055 422.8
A 3 137 19964 42.36 2101 2055 422.8
B 4 80 74474 180.37 2090 2035 401.6
B 0 189 64202 154.8 2090 2035 401.6
B 12 111 51419 122.97 2090 2035 401.6
C 7 247 445950 939.76 2014 2029 472.4
C 14 238 318855 670.7 2014 2029 472.4
C 2 16 243429 511.03 2014 2029 472.4
D 1 52 875134 1761.0 2041 1987 495.8
D 12 218 210690 420.92 2041 1987 495.8
D 8 195 161743 322.2 2041 1987 495.8

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