ASTROSAT CZTI

Data Quality Report

Orbit 14854

Creation date: 2024-06-27T17:00:30.029801
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/AS1A04_218T01_9000002194_14854cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14854cztM0_level2_quad_clean.evt
Size (bytes)526,622,400107,619,840
Size502.2 MB 102.6 MB
Events in quadrant A3,692,749702,277
Events in quadrant B3,861,629690,525
Events in quadrant C3,935,274678,703
Events in quadrant D3,956,074672,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156863
B0162062
C0160722
D0170882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7413961.295022%
B74131171.578308%
C7413390.526103%
D74131181.591798%

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 7828 7414 2 2 0.03% 0.03%
B 7828 7414 10 10 0.13% 0.13%
C 7828 7414 1 1 0.01% 0.01%
D 7828 7414 8 8 0.10% 0.11%

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 12 189 67614 354.95 928 910 187.9
A 9 143 46747 243.91 928 910 187.9
A 0 226 8536 40.58 928 910 187.9
B 0 219 87132 494.44 912 891 174.4
B 0 189 85880 487.26 912 891 174.4
B 0 228 28444 157.97 912 891 174.4
C 3 233 460666 2254.49 883 889 203.9
C 7 247 20976 98.5 883 889 203.9
C 6 96 13530 61.98 883 889 203.9
D 15 0 473015 2186.09 890 866 216.0
D 7 38 50285 228.81 890 866 216.0
D 2 234 27908 125.21 890 866 216.0

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