ASTROSAT CZTI

Data Quality Report

Orbit 25827

Creation date: 2024-06-27T19:21:52.320993
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/AS1A07_068T01_9000003756_25827cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25827cztM0_level2_quad_clean.evt
Size (bytes)2,397,216,960416,750,400
Size2.2 GB 397.4 MB
Events in quadrant A15,913,1942,709,644
Events in quadrant B16,377,2652,720,235
Events in quadrant C16,160,1062,545,668
Events in quadrant D21,988,5372,446,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0674670
B0686710
C0683540
D0867770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A320161990.621564%
B320173120.974482%
C320174021.255583%
D3201620926.534233%

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 38410 32020 2 2 0.01% 0.01%
B 38411 32024 23 23 0.06% 0.07%
C 38411 32023 2 2 0.01% 0.01%
D 38410 32022 2063 2063 5.37% 6.44%

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 13 142628 171.27 4088 4020 809.3
A 13 254 46832 52.9 4088 4020 809.3
A 3 137 37184 40.98 4088 4020 809.3
B 15 33 239112 310.94 4038 3954 756.3
B 0 219 182006 235.43 4038 3954 756.3
B 12 111 92712 117.36 4038 3954 756.3
C 14 238 621231 693.4 3842 3862 890.3
C 3 233 523154 583.25 3842 3862 890.3
C 7 238 32377 32.03 3842 3862 890.3
D 7 80 3184883 3559.22 3769 3679 893.8
D 7 223 2611290 2917.47 3769 3679 893.8
D 12 233 1139416 1270.7 3769 3679 893.8

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