ASTROSAT CZTI

Data Quality Report

Orbit 46142

Creation date: 2024-06-27T23:19:37.109815
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/AS1A13_098T02_9000006174_46142cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46142cztM0_level2_quad_clean.evt
Size (bytes)590,993,280103,167,360
Size563.6 MB 98.4 MB
Events in quadrant A6,547,942677,953
Events in quadrant B4,037,174755,650
Events in quadrant C3,195,839718,569
Events in quadrant D7,609,700533,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236552
B0161832
C0137422
D0269202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62764837.695985%
B6276831.322498%
C6276410.653282%
D6276144423.008286%

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 7486 6277 314 314 4.19% 5.00%
B 7486 6277 29 29 0.39% 0.46%
C 7486 6277 26 26 0.35% 0.41%
D 7486 6277 1040 1040 13.89% 16.57%

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 10 83 3063951 20853.34 711 700 146.9
A 13 248 503959 3425.98 711 700 146.9
A 0 247 157361 1066.48 711 700 146.9
B 3 112 917948 6391.53 734 710 143.5
B 5 172 73198 505.11 734 710 143.5
B 12 16 43778 300.11 734 710 143.5
C 12 2 221344 1298.55 719 724 169.9
C 14 254 111272 650.68 719 724 169.9
C 2 14 41277 238.69 719 724 169.9
D 1 52 1843063 11403.61 641 623 161.6
D 8 129 1421994 8797.45 641 623 161.6
D 2 37 588844 3640.74 641 623 161.6

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