ASTROSAT CZTI

Data Quality Report

Orbit 21953

Creation date: 2024-06-27T18:34:26.510104
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/AS1A07_007T02_9000003244_21953cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21953cztM0_level2_quad_clean.evt
Size (bytes)464,725,44068,014,080
Size443.2 MB 64.9 MB
Events in quadrant A3,333,441405,832
Events in quadrant B3,636,746408,609
Events in quadrant C3,212,609396,689
Events in quadrant D3,444,135389,175

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140632
B0147832
C0135373
D0145942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6580650.987842%
B65801452.203647%
C6579731.109591%
D65791372.082383%

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 7585 6580 1 1 0.01% 0.02%
B 7585 6580 71 71 0.94% 1.08%
C 7584 6579 0 0 0.00% 0.00%
D 7584 6579 95 95 1.25% 1.44%

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 2 79 80750 476.83 831 813 167.6
A 4 2 35184 205.03 831 813 167.6
A 6 16 14402 81.06 831 813 167.6
B 3 64 376644 2378.88 821 798 158.0
B 12 111 19527 118.54 821 798 158.0
B 11 111 17292 104.4 821 798 158.0
C 14 238 126704 680.31 791 797 185.1
C 13 61 5625 26.09 791 797 185.1
C 0 10 2532 9.37 791 797 185.1
D 11 176 349736 1807.93 797 775 193.0
D 1 52 53070 270.93 797 775 193.0
D 2 234 23719 118.87 797 775 193.0

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