ASTROSAT CZTI

Data Quality Report

Orbit 10882

Creation date: 2024-06-27T16:05:08.511056
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/AS1A04_055T01_9000001574_10882cztM0_level2.evt modeM0/AS1A04_055T01_9000001574_10882cztM0_level2_quad_clean.evt
Size (bytes)546,894,720111,867,840
Size521.6 MB 106.7 MB
Events in quadrant A4,104,302744,493
Events in quadrant B4,102,220753,379
Events in quadrant C3,057,475755,655
Events in quadrant D4,862,722685,740

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164823
B0163812
C0134562
D0187232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64271652.567294%
B64272654.123230%
C6427440.684612%
D64274877.577408%

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 7597 6428 59 59 0.78% 0.92%
B 7597 6428 114 114 1.50% 1.77%
C 7597 6428 0 0 0.00% 0.00%
D 7597 6428 337 337 4.44% 5.24%

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 8 5 940918 5833.02 799 784 161.2
A 15 223 43807 266.93 799 784 161.2
A 15 239 19225 114.42 799 784 161.2
B 4 239 984534 6588.98 790 769 149.3
B 0 214 18434 118.32 790 769 149.3
B 12 111 15735 100.24 790 769 149.3
C 14 234 6572 32.29 781 786 179.2
C 13 61 5813 28.06 781 786 179.2
C 5 207 4093 18.46 781 786 179.2
D 1 52 1499151 8314.84 756 735 180.2
D 8 195 235476 1302.6 756 735 180.2
D 2 14 89892 494.74 756 735 180.2

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