ASTROSAT CZTI

Data Quality Report

Orbit 15461

Creation date: 2024-06-27T17:08:50.981922
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_203T01_9000002284_15461cztM0_level2.evt modeM0/AS1A04_203T01_9000002284_15461cztM0_level2_quad_clean.evt
Size (bytes)514,082,88082,788,480
Size490.3 MB 79.0 MB
Events in quadrant A3,823,715510,066
Events in quadrant B3,480,649523,050
Events in quadrant C3,935,544513,079
Events in quadrant D3,872,257491,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155473
B0145082
C0162382
D0157052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67301942.882615%
B6730991.471025%
C6730831.233284%
D67301782.644874%

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 7586 6732 94 94 1.24% 1.40%
B 7586 6732 2 2 0.03% 0.03%
C 7586 6732 1 1 0.01% 0.01%
D 7586 6732 94 94 1.24% 1.40%

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 14 238 341339 1979.3 844 825 172.0
A 14 237 111150 641.29 844 825 172.0
A 12 96 54048 309.37 844 825 172.0
B 0 230 44200 266.2 848 826 162.9
B 0 229 28623 170.6 848 826 162.9
B 0 189 27231 162.06 848 826 162.9
C 3 233 704474 3682.93 825 831 191.1
C 9 54 6833 31.42 825 831 191.1
C 13 61 5970 26.9 825 831 191.1
D 1 52 208639 1030.7 826 802 201.6
D 2 33 207718 1026.13 826 802 201.6
D 5 222 131088 646.11 826 802 201.6

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