ASTROSAT CZTI

Data Quality Report

Orbit 32128

Creation date: 2024-06-27T20:36:47.854679
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/AS1T04_051T01_9000004686_32128cztM0_level2.evt modeM0/AS1T04_051T01_9000004686_32128cztM0_level2_quad_clean.evt
Size (bytes)1,298,183,040164,145,600
Size1.2 GB 156.5 MB
Events in quadrant A5,872,6381,104,154
Events in quadrant B15,741,129929,454
Events in quadrant C6,743,9641,064,762
Events in quadrant D10,121,1361,012,331

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254132
B0553644
C0280622
D0389292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12425560.450704%
B12424272221.909208%
C124243472.792981%
D124256044.861167%

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 13615 12427 0 0 0.00% 0.00%
B 13614 12426 2232 2232 16.39% 17.96%
C 13614 12426 79 79 0.58% 0.64%
D 13615 12427 601 601 4.41% 4.84%

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 13 6 38678 124.22 1503 1473 299.5
A 2 79 28236 89.36 1503 1473 299.5
A 13 254 24761 77.75 1503 1473 299.5
B 10 245 6223387 23994.76 1355 1323 259.3
B 6 159 3386444 13054.38 1355 1323 259.3
B 5 172 418109 1607.29 1355 1323 259.3
C 0 10 666829 1991.94 1420 1430 334.0
C 14 238 299224 891.48 1420 1430 334.0
C 14 254 103730 306.25 1420 1430 334.0
D 8 195 2517073 7328.81 1419 1379 343.3
D 12 233 1392875 4053.75 1419 1379 343.3
D 7 38 439912 1277.55 1419 1379 343.3

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