ASTROSAT CZTI

Data Quality Report

Orbit 44361

Creation date: 2024-06-27T23:02:39.777233
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/AS1A13_008T06_9000005994_44361cztM0_level2.fits modeM0/AS1A13_008T06_9000005994_44361cztM0_level2_quad_clean.evt
Size (bytes)1,373,834,880246,602,880
Size1.3 GB 235.2 MB
Events in quadrant A17,670,7551,471,945
Events in quadrant B8,427,4751,792,975
Events in quadrant C8,165,6531,730,289
Events in quadrant D15,352,1161,365,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0645593
B0358073
C0357803
D0566853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16034266116.595984%
B160343422.132967%
C160332171.353458%
D16034235414.681302%

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 18784 16035 1933 1933 10.29% 12.05%
B 18784 16035 82 82 0.44% 0.51%
C 18783 16036 106 106 0.56% 0.66%
D 18784 16036 2072 2072 11.03% 12.92%

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 15 223 3999765 11197.71 1729 1692 357.0
A 10 83 3918897 10971.22 1729 1692 357.0
A 13 248 2893609 8099.62 1729 1692 357.0
B 0 219 232096 625.9 1856 1802 367.9
B 5 255 182275 490.5 1856 1802 367.9
B 4 170 154142 414.04 1856 1802 367.9
C 14 254 751015 1763.66 1802 1813 424.8
C 14 96 180388 420.37 1802 1813 424.8
C 1 3 104751 242.32 1802 1813 424.8
D 13 249 2657419 6214.88 1692 1644 427.3
D 5 235 2224115 5200.89 1692 1644 427.3
D 4 221 895424 2091.57 1692 1644 427.3

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