ASTROSAT CZTI

Data Quality Report

Orbit 09575

Creation date: 2024-06-27T15:47:56.297965
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/AS1G07_042T01_9000001360_09575cztM0_level2.evt modeM0/AS1G07_042T01_9000001360_09575cztM0_level2_quad_clean.evt
Size (bytes)875,839,680178,260,480
Size835.3 MB 170.0 MB
Events in quadrant A6,995,3661,142,834
Events in quadrant B5,886,2221,155,204
Events in quadrant C5,663,1701,142,154
Events in quadrant D7,126,6581,087,520

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02926126
B02603414
C02571222
D02997023

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126041651.309108%
B12608760.602792%
C12604450.357030%
D126043943.125992%

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 13874 12616 6 6 0.04% 0.05%
B 13874 12616 2 2 0.01% 0.02%
C 13874 12616 0 0 0.00% 0.00%
D 13874 12616 292 292 2.10% 2.31%

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 1 162 498116 1644.98 1483 1457 301.9
A 1 178 257922 849.44 1483 1457 301.9
A 1 161 243694 802.31 1483 1457 301.9
B 4 80 48181 164.24 1491 1458 284.5
B 12 111 32349 108.59 1491 1458 284.5
B 15 85 28396 94.69 1491 1458 284.5
C 9 68 20451 56.68 1448 1458 335.1
C 13 61 10753 27.74 1448 1458 335.1
C 3 202 3725 6.77 1448 1458 335.1
D 1 52 886923 2476.98 1415 1383 357.5
D 12 233 524368 1462.86 1415 1383 357.5
D 13 122 190413 528.74 1415 1383 357.5

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