ASTROSAT CZTI

Data Quality Report

Orbit 15438

Creation date: 2024-06-27T17:08:31.517124
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/AS1T02_080T01_9000002276_15438cztM0_level2.evt modeM0/AS1T02_080T01_9000002276_15438cztM0_level2_quad_clean.evt
Size (bytes)1,429,341,120223,617,600
Size1.3 GB 213.3 MB
Events in quadrant A9,905,3961,389,123
Events in quadrant B8,868,5121,421,256
Events in quadrant C9,773,6461,406,424
Events in quadrant D13,504,7341,293,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417655
B0382284
C0401714
D0527424

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183081490.813852%
B183081440.786541%
C183081380.753769%
D1830811736.407035%

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 20869 18313 17 17 0.08% 0.09%
B 20869 18313 11 11 0.05% 0.06%
C 20869 18312 30 30 0.14% 0.16%
D 20869 18311 871 871 4.17% 4.76%

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 15 249 1303164 3019.16 2141 2095 430.9
A 14 238 210704 484.08 2141 2095 430.9
A 14 237 80772 182.57 2141 2095 430.9
B 4 142 79782 188.92 2156 2100 411.2
B 0 197 70879 167.27 2156 2100 411.2
B 0 189 56117 131.37 2156 2100 411.2
C 3 233 1483775 3081.41 2086 2096 480.8
C 10 22 92568 188.15 2086 2096 480.8
C 7 247 18137 33.36 2086 2096 480.8
D 13 122 2321110 4677.75 2036 1976 495.8
D 5 222 1400907 2821.68 2036 1976 495.8
D 1 52 1281767 2581.37 2036 1976 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