ASTROSAT CZTI

Data Quality Report

Orbit 15417

Creation date: 2024-06-27T17:08:15.098062
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_076T01_9000002274_15417cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15417cztM0_level2_quad_clean.evt
Size (bytes)515,923,200100,635,840
Size492.0 MB 96.0 MB
Events in quadrant A3,669,120655,357
Events in quadrant B3,536,456662,230
Events in quadrant C3,565,432648,294
Events in quadrant D4,400,201615,367

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153093
B0147512
C0146952
D0178662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66871642.452520%
B6687640.957081%
C6687190.284133%
D66881392.078349%

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 7718 6689 93 93 1.20% 1.39%
B 7718 6689 10 10 0.13% 0.15%
C 7718 6689 2 2 0.03% 0.03%
D 7719 6690 105 105 1.36% 1.57%

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 272207 1626.78 816 799 166.8
A 14 237 142519 849.45 816 799 166.8
A 13 248 75802 449.56 816 799 166.8
B 0 189 47242 298.4 817 800 155.6
B 4 142 41362 260.62 817 800 155.6
B 0 197 41031 258.49 817 800 155.6
C 3 233 426477 2362.91 781 786 180.2
C 7 247 84600 465.23 781 786 180.2
C 13 61 5676 27.14 781 786 180.2
D 13 122 897524 4688.82 781 755 191.3
D 2 33 135925 706.75 781 755 191.3
D 5 222 129817 674.81 781 755 191.3

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