ASTROSAT CZTI

Data Quality Report

Orbit 08558

Creation date: 2024-06-27T15:34:15.787592
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_060T01_9000001200_08558cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08558cztM0_level2_quad_clean.evt
Size (bytes)787,210,560136,307,520
Size750.7 MB 130.0 MB
Events in quadrant A5,596,013826,878
Events in quadrant B5,786,465839,945
Events in quadrant C5,522,171825,692
Events in quadrant D6,111,356794,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252003
B0254382
C0251792
D0269282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121534363.587592%
B121534463.669876%
C121533092.542582%
D121534643.817987%

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 12768 12154 0 0 0.00% 0.00%
B 12768 12153 3 3 0.02% 0.02%
C 12768 12154 0 0 0.00% 0.00%
D 12768 12154 94 94 0.74% 0.77%

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 0 226 13448 40.29 1451 1416 298.6
A 12 194 12807 38.15 1451 1416 298.6
A 15 223 11047 32.25 1451 1416 298.6
B 0 214 60759 210.23 1448 1409 282.3
B 12 111 32789 111.16 1448 1409 282.3
B 4 48 30756 103.96 1448 1409 282.3
C 13 61 10626 27.87 1412 1414 330.6
C 8 222 9453 24.32 1412 1414 330.6
C 8 128 5537 12.47 1412 1414 330.6
D 4 95 312075 892.19 1400 1362 348.3
D 1 52 195864 558.5 1400 1362 348.3
D 11 129 59568 167.13 1400 1362 348.3

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