ASTROSAT CZTI

Data Quality Report

Orbit 08972

Creation date: 2024-06-27T15:39:36.760588
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/AS1G07_019T01_9000001244_08972cztM0_level2.evt modeM0/AS1G07_019T01_9000001244_08972cztM0_level2_quad_clean.evt
Size (bytes)539,104,32077,535,360
Size514.1 MB 73.9 MB
Events in quadrant A4,558,721476,458
Events in quadrant B3,619,365489,739
Events in quadrant C3,278,638478,744
Events in quadrant D4,426,102445,958

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177903
B0148192
C0138852
D0173372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65452483.789152%
B65452203.361345%
C6545861.313980%
D65453735.699007%

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 8895 6546 118 118 1.33% 1.80%
B 8895 6546 36 36 0.40% 0.55%
C 8895 6547 8 8 0.09% 0.12%
D 8895 6545 282 282 3.17% 4.31%

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 8 5 941345 5572.92 838 819 168.8
A 5 16 268769 1587.69 838 819 168.8
A 15 174 111022 652.99 838 819 168.8
B 10 16 282978 1796.66 836 817 157.0
B 0 219 28990 179.39 836 817 157.0
B 0 214 26926 166.25 836 817 157.0
C 4 254 123404 663.97 805 811 184.6
C 14 67 17015 87.76 805 811 184.6
C 13 61 6304 29.75 805 811 184.6
D 1 52 850069 4044.51 792 773 210.0
D 13 29 358546 1703.78 792 773 210.0
D 6 225 62595 294.41 792 773 210.0

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