ASTROSAT CZTI

Data Quality Report

Orbit 39705

Creation date: 2024-06-27T22:08:00.026849
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/AS1A12_022T01_9000005494_39705cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39705cztM0_level2_quad_clean.evt
Size (bytes)64,598,40015,678,720
Size61.6 MB 15.0 MB
Events in quadrant A863,299104,699
Events in quadrant B433,761110,866
Events in quadrant C550,679103,270
Events in quadrant D480,24794,833

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031392
B017531
C021941
D018911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A772557.124352%
B77220.259067%
C77270.906736%
D77291.165803%

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 772 772 25 25 3.24% 3.24%
B 772 772 0 0 0.00% 0.00%
C 772 772 5 5 0.65% 0.65%
D 772 772 11 11 1.42% 1.42%

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 15 222 324690 14912.24 100 98 21.8
A 10 83 119368 5479.44 100 98 21.8
A 15 174 29797 1364.42 100 98 21.8
B 0 190 38740 1847.49 98 96 20.9
B 0 230 6605 311.18 98 96 20.9
B 12 111 2209 101.02 98 96 20.9
C 9 187 128872 5466.3 94 95 23.6
C 15 214 36149 1530.41 94 95 23.6
C 15 208 9692 407.37 94 95 23.6
D 2 250 41556 1606.85 97 94 25.8
D 2 153 20770 801.29 97 94 25.8
D 12 218 16634 641.0 97 94 25.8

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