ASTROSAT CZTI

Data Quality Report

Orbit 03251

Creation date: 2024-06-27T14:26:44.056051
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/AS1G05_104T01_9000000440_03251cztM0_level2.evt modeM0/AS1G05_104T01_9000000440_03251cztM0_level2_quad_clean.evt
Size (bytes)1,652,558,400290,767,680
Size1.5 GB 277.3 MB
Events in quadrant A10,405,8841,853,394
Events in quadrant B13,678,3951,831,190
Events in quadrant C11,484,1601,804,869
Events in quadrant D12,916,5211,724,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474055
B0558824
C0507304
D0551314

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A231392651.145253%
B231393011.300834%
C231393451.490989%
D231394591.983664%

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 25484 23144 30 30 0.12% 0.13%
B 25484 23144 16 16 0.06% 0.07%
C 25484 23144 141 141 0.55% 0.61%
D 25484 23144 325 325 1.28% 1.40%

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 0 118 131436 239.69 2631 2578 537.6
A 0 50 66620 119.12 2631 2578 537.6
A 3 1 47229 83.06 2631 2578 537.6
B 15 204 3121454 6013.07 2676 2615 518.7
B 5 200 76612 142.66 2676 2615 518.7
B 0 229 71596 132.99 2676 2615 518.7
C 14 223 965943 1628.32 2540 2557 591.6
C 12 175 251709 421.12 2540 2557 591.6
C 1 192 177069 294.96 2540 2557 591.6
D 13 114 2106499 3439.38 2516 2443 611.8
D 12 233 467963 760.96 2516 2443 611.8
D 13 223 392686 637.91 2516 2443 611.8

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