ASTROSAT CZTI

Data Quality Report

Orbit 08737

Creation date: 2024-06-27T15:36:31.579292
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_005T02_9000001214_08737cztM0_level2.evt modeM0/AS1G07_005T02_9000001214_08737cztM0_level2_quad_clean.evt
Size (bytes)1,219,282,560287,112,960
Size1.1 GB 273.8 MB
Events in quadrant A8,621,6721,877,360
Events in quadrant B8,731,1771,899,845
Events in quadrant C9,604,6491,846,318
Events in quadrant D8,726,1021,807,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380355
B0382764
C0415224
D0388884

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183652201.197931%
B183652271.236047%
C183654512.455758%
D183652281.241492%

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 21180 18366 18 18 0.08% 0.10%
B 21180 18366 39 39 0.18% 0.21%
C 21180 18367 282 282 1.33% 1.54%
D 21180 18367 85 85 0.40% 0.46%

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 13 251 395519 920.94 2108 2058 427.2
A 15 174 76550 174.36 2108 2058 427.2
A 5 16 35302 77.81 2108 2058 427.2
B 10 16 225791 552.28 2121 2071 405.1
B 5 255 71485 171.36 2121 2071 405.1
B 0 214 60026 143.07 2121 2071 405.1
C 4 254 984942 2099.3 2033 2038 468.2
C 1 16 541171 1151.49 2033 2038 468.2
C 14 234 98936 206.96 2033 2038 468.2
D 7 71 291386 532.57 2029 1982 543.4
D 11 129 208921 380.81 2029 1982 543.4
D 13 122 160970 292.57 2029 1982 543.4

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