ASTROSAT CZTI

Data Quality Report

Orbit 23833

Creation date: 2024-06-27T18:59:10.186443
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_113T01_9000003526_23833cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23833cztM0_level2_quad_clean.evt
Size (bytes)1,181,957,760210,628,800
Size1.1 GB 200.9 MB
Events in quadrant A6,748,1771,350,776
Events in quadrant B7,078,4431,388,313
Events in quadrant C7,438,1451,347,753
Events in quadrant D13,550,3901,289,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02940
B02940
C02940
D02940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0294572
B0302192
C0311932
D0505832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14540940.646492%
B145411430.983426%
C145422251.547242%
D145423612.482465%

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 44404 14543 0 0 0.00% 0.00%
B 44404 14544 13 13 0.03% 0.09%
C 44405 14545 48 48 0.11% 0.33%
D 44405 14545 130 130 0.29% 0.89%

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 25627 68.09 1746 1710 351.3
A 3 137 15481 39.21 1746 1710 351.3
A 0 226 15118 38.17 1746 1710 351.3
B 3 64 193512 582.69 1742 1701 329.2
B 12 111 40537 117.98 1742 1701 329.2
B 11 111 35959 104.07 1742 1701 329.2
C 14 238 264806 671.42 1682 1696 391.9
C 0 239 214889 544.04 1682 1696 391.9
C 0 207 148390 374.34 1682 1696 391.9
D 8 195 3543399 8658.66 1689 1640 409.0
D 13 174 3090301 7550.96 1689 1640 409.0
D 1 52 195729 474.5 1689 1640 409.0

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