ASTROSAT CZTI

Data Quality Report

Orbit 37472

Creation date: 2024-06-27T21:40:26.189483
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/AS1A11_027T01_9000005324_37472cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37472cztM0_level2_quad_clean.evt
Size (bytes)428,448,96099,976,320
Size408.6 MB 95.3 MB
Events in quadrant A3,500,855660,808
Events in quadrant B2,886,109674,666
Events in quadrant C2,965,981669,515
Events in quadrant D3,249,059638,017

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140773
B0123092
C0123202
D0134172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5499330.600109%
B5499791.436625%
C54991162.109474%
D54991582.873250%

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 7113 5500 11 11 0.15% 0.20%
B 7113 5500 50 50 0.70% 0.91%
C 7113 5500 103 103 1.45% 1.87%
D 7113 5500 160 160 2.25% 2.91%

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 733393 5919.99 609 597 123.8
A 10 83 304868 2458.09 609 597 123.8
A 13 248 36051 286.42 609 597 123.8
B 5 172 167568 1421.98 607 590 117.4
B 4 81 144392 1224.62 607 590 117.4
B 4 232 34967 292.75 607 590 117.4
C 0 10 259043 1876.33 590 594 137.7
C 15 214 233421 1690.32 590 594 137.7
C 14 254 112865 815.08 590 594 137.7
D 13 249 380852 2684.03 584 567 141.7
D 12 233 176895 1244.51 584 567 141.7
D 12 227 125658 882.88 584 567 141.7

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