ASTROSAT CZTI

Data Quality Report

Orbit 15424

Creation date: 2024-06-27T17:08:19.707220
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_15424cztM0_level2.evt modeM0/AS1T02_076T01_9000002274_15424cztM0_level2_quad_clean.evt
Size (bytes)620,182,08085,262,400
Size591.5 MB 81.3 MB
Events in quadrant A4,435,430517,178
Events in quadrant B4,413,608520,818
Events in quadrant C3,900,361530,901
Events in quadrant D5,527,892494,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180583
B0179182
C0159782
D0214612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74583234.330920%
B74583214.304103%
C7458781.045857%
D74584636.208099%

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 9199 7460 162 162 1.76% 2.17%
B 9199 7460 164 164 1.78% 2.20%
C 9199 7460 12 12 0.13% 0.16%
D 9199 7460 335 335 3.64% 4.49%

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 792908 4383.02 886 865 180.7
A 14 237 187714 1033.99 886 865 180.7
A 12 96 17245 90.64 886 865 180.7
B 10 245 790230 4658.73 889 865 169.4
B 0 190 28653 164.0 889 865 169.4
B 4 142 26593 151.84 889 865 169.4
C 3 233 428167 2115.04 877 881 202.0
C 7 247 35593 171.82 877 881 202.0
C 10 22 7122 30.89 877 881 202.0
D 13 122 1244147 5956.85 856 831 208.7
D 5 222 668773 3200.18 856 831 208.7
D 7 38 166651 794.46 856 831 208.7

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