ASTROSAT CZTI

Data Quality Report

Orbit 17653

Creation date: 2024-06-27T17:39:09.538336
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/AS1A05_118T02_9000002612_17653cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17653cztM0_level2_quad_clean.evt
Size (bytes)836,081,280161,608,320
Size797.3 MB 154.1 MB
Events in quadrant A5,675,4911,026,100
Events in quadrant B5,910,6061,035,386
Events in quadrant C6,053,4911,000,002
Events in quadrant D6,845,428979,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251883
B0256913
C0256393
D0289883

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12330470.381184%
B12330640.519059%
C123311040.843403%
D123312181.767902%

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 14025 12332 0 0 0.00% 0.00%
B 14025 12332 1 1 0.01% 0.01%
C 14026 12333 0 0 0.00% 0.00%
D 14026 12332 124 124 0.88% 1.01%

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 14 237 40976 132.92 1466 1436 297.5
A 0 226 12743 38.01 1466 1436 297.5
A 3 137 11315 33.21 1466 1436 297.5
B 0 189 44956 155.61 1463 1426 279.7
B 4 80 43106 149.0 1463 1426 279.7
B 12 111 34183 117.1 1463 1426 279.7
C 3 233 345970 1047.83 1407 1415 328.8
C 14 238 215128 649.92 1407 1415 328.8
C 5 218 10355 27.19 1407 1415 328.8
D 1 52 909495 2626.21 1416 1375 345.8
D 13 189 503725 1452.76 1416 1375 345.8
D 2 234 48304 135.72 1416 1375 345.8

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