ASTROSAT CZTI

Data Quality Report

Orbit 05468

Creation date: 2024-06-27T14:55:33.549568
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/AS1T01_138T01_9000000698_05468cztM0_level2.evt modeM0/AS1T01_138T01_9000000698_05468cztM0_level2_quad_clean.evt
Size (bytes)471,055,68072,178,560
Size449.2 MB 68.8 MB
Events in quadrant A2,906,404449,472
Events in quadrant B3,449,911446,089
Events in quadrant C2,660,490448,491
Events in quadrant D4,834,148414,582

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130092
B0142281
C0124591
D0183881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6113901.472272%
B6113380.621626%
C6113140.229020%
D61133746.118109%

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 7203 6114 31 31 0.43% 0.51%
B 7203 6114 8 8 0.11% 0.13%
C 7203 6114 0 0 0.00% 0.00%
D 7203 6114 381 381 5.29% 6.23%

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 0 50 134174 916.49 707 693 145.6
A 15 174 23187 154.45 707 693 145.6
A 14 111 22999 153.15 707 693 145.6
B 15 204 516991 3789.1 708 692 136.3
B 4 48 33939 244.0 708 692 136.3
B 0 219 33114 237.94 708 692 136.3
C 1 16 7999 46.54 678 683 157.2
C 9 54 6299 35.72 678 683 157.2
C 13 61 5567 31.07 678 683 157.2
D 2 33 1561067 9355.09 672 652 166.8
D 10 246 246278 1472.59 672 652 166.8
D 8 195 110885 660.88 672 652 166.8

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