ASTROSAT CZTI

Data Quality Report

Orbit 24991

Creation date: 2024-06-27T19:12:25.841492
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/AS1A07_127T03_9000003662_24991cztM0_level2.evt modeM0/AS1A07_127T03_9000003662_24991cztM0_level2_quad_clean.evt
Size (bytes)1,026,835,200138,288,960
Size979.3 MB 131.9 MB
Events in quadrant A5,909,083850,169
Events in quadrant B6,045,799867,307
Events in quadrant C6,446,318823,977
Events in quadrant D11,858,064787,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254062
B0256812
C0267592
D0436542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124121731.393812%
B124121951.571060%
C124122321.869159%
D1241211519.273284%

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 13507 12414 0 0 0.00% 0.00%
B 13507 12414 2 2 0.01% 0.02%
C 13506 12413 0 0 0.00% 0.00%
D 13507 12414 973 973 7.20% 7.84%

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 6 16 30581 95.07 1518 1484 306.1
A 9 130 23989 73.53 1518 1484 306.1
A 13 254 19810 59.88 1518 1484 306.1
B 0 190 88031 299.42 1504 1464 289.1
B 12 111 36358 120.69 1504 1464 289.1
B 11 111 32711 108.08 1504 1464 289.1
C 7 247 540463 1579.56 1447 1456 341.2
C 14 238 229633 668.67 1447 1456 341.2
C 2 16 16392 43.77 1447 1456 341.2
D 1 52 5270458 15068.18 1438 1397 349.7
D 7 238 621884 1774.44 1438 1397 349.7
D 8 195 301052 856.94 1438 1397 349.7

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