ASTROSAT CZTI

Data Quality Report

Orbit 20191

Creation date: 2024-06-27T18:12:14.935342
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/AS1C04_001T01_9000002994_20191cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20191cztM0_level2_quad_clean.evt
Size (bytes)412,744,320123,508,800
Size393.6 MB 117.8 MB
Events in quadrant A2,914,244863,085
Events in quadrant B3,004,417865,011
Events in quadrant C2,883,097818,417
Events in quadrant D3,305,243790,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121221
B0123842
C0120381
D0135251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5784520.899032%
B5784651.123790%
C5784651.123790%
D57842163.734440%

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 7094 5785 1 1 0.01% 0.02%
B 7094 5785 6 6 0.08% 0.10%
C 7094 5785 0 0 0.00% 0.00%
D 7094 5784 160 160 2.26% 2.77%

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 4 2 18380 116.84 752 738 151.0
A 0 226 6652 39.17 752 738 151.0
A 12 194 5584 32.1 752 738 151.0
B 0 197 57072 410.15 739 722 137.4
B 15 36 22969 161.93 739 722 137.4
B 12 111 15512 107.65 739 722 137.4
C 14 238 112343 689.31 702 705 162.0
C 3 233 33618 203.22 702 705 162.0
C 13 61 5089 27.07 702 705 162.0
D 9 1 291166 1745.41 698 679 166.4
D 15 0 111056 663.21 698 679 166.4
D 7 38 83300 496.43 698 679 166.4

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