ASTROSAT CZTI

Data Quality Report

Orbit 07702

Creation date: 2024-06-27T15:22:54.889675
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/AS1A02_155T01_9000001062_07702cztM0_level2.evt modeM0/AS1A02_155T01_9000001062_07702cztM0_level2_quad_clean.evt
Size (bytes)452,712,96067,636,800
Size431.7 MB 64.5 MB
Events in quadrant A3,225,510398,710
Events in quadrant B3,306,502403,871
Events in quadrant C3,267,330397,381
Events in quadrant D3,458,210383,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138443
B0139142
C0140602
D0145802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66501362.045113%
B66501332.000000%
C66501001.503759%
D66501191.789474%

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 7620 6650 0 0 0.00% 0.00%
B 7620 6650 1 1 0.01% 0.02%
C 7620 6650 0 0 0.00% 0.00%
D 7620 6650 14 14 0.18% 0.21%

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 0 226 8090 42.59 835 817 170.8
A 12 194 7266 37.76 835 817 170.8
A 13 14 5698 28.58 835 817 170.8
B 12 111 16631 98.84 836 817 160.0
B 11 111 13235 77.62 836 817 160.0
B 0 230 11869 69.08 836 817 160.0
C 9 68 69232 360.11 817 821 190.0
C 12 4 6723 31.07 817 821 190.0
C 13 61 6262 28.64 817 821 190.0
D 2 152 236760 1182.07 817 791 199.6
D 12 233 58127 287.22 817 791 199.6
D 12 0 37733 185.06 817 791 199.6

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