ASTROSAT CZTI

Data Quality Report

Orbit 21402

Creation date: 2024-06-27T18:27:24.321011
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/AS1T03_140T01_9000003160_21402cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21402cztM0_level2_quad_clean.evt
Size (bytes)550,857,60090,167,040
Size525.3 MB 86.0 MB
Events in quadrant A3,682,669556,074
Events in quadrant B3,867,337562,273
Events in quadrant C3,863,843544,816
Events in quadrant D4,737,667522,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159513
B0162582
C0163302
D0192152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7825440.562300%
B7826610.779453%
C7826821.047789%
D78261962.504472%

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 9450 7825 0 0 0.00% 0.00%
B 9451 7826 1 1 0.01% 0.01%
C 9451 7826 0 0 0.00% 0.00%
D 9451 7826 133 133 1.41% 1.70%

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 13118 63.48 953 932 192.0
A 0 226 8446 39.14 953 932 192.0
A 3 137 8062 37.14 953 932 192.0
B 0 245 33569 177.33 954 931 184.0
B 0 230 28234 148.35 954 931 184.0
B 6 36 21906 113.96 954 931 184.0
C 3 233 159389 741.51 912 917 213.7
C 14 238 144006 669.53 912 917 213.7
C 13 61 6650 26.83 912 917 213.7
D 7 38 479419 2159.58 913 885 221.6
D 1 20 364960 1643.04 913 885 221.6
D 1 52 205751 924.54 913 885 221.6

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