ASTROSAT CZTI

Data Quality Report

Orbit 11785

Creation date: 2024-06-27T16:18:16.733281
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/AS1C03_024T01_9000001742_11785cztM0_level2.evt modeM0/AS1C03_024T01_9000001742_11785cztM0_level2_quad_clean.evt
Size (bytes)1,399,559,040226,684,800
Size1.3 GB 216.2 MB
Events in quadrant A9,666,4651,454,559
Events in quadrant B12,756,4841,427,254
Events in quadrant C7,763,8731,463,527
Events in quadrant D11,080,1701,376,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393044
B0489693
C0343393
D0440613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165956664.013257%
B1659511937.188912%
C165952431.464296%
D165953812.295872%

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 19161 16599 196 196 1.02% 1.18%
B 19161 16599 471 471 2.46% 2.84%
C 19161 16599 0 0 0.00% 0.00%
D 19161 16598 110 110 0.57% 0.66%

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 15 174 551221 1355.01 2016 1978 405.3
A 8 15 394370 968.05 2016 1978 405.3
A 1 162 330398 810.23 2016 1978 405.3
B 4 239 1935981 5069.28 2018 1973 381.5
B 10 16 1668129 4367.21 2018 1973 381.5
B 3 64 444032 1158.69 2018 1973 381.5
C 13 61 14435 27.21 1988 2000 456.9
C 14 234 7425 11.87 1988 2000 456.9
C 1 3 6214 9.22 1988 2000 456.9
D 1 52 2599174 5516.56 1974 1923 470.8
D 8 195 589693 1248.42 1974 1923 470.8
D 13 104 84823 176.08 1974 1923 470.8

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