ASTROSAT CZTI

Data Quality Report

Orbit 01074

Creation date: 2024-06-27T14:07:02.956370
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/AS1P01_998T02_9000000190_01074cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01074cztM0_level2_quad_clean.evt
Size (bytes)1,049,172,480111,738,240
Size1000.6 MB 106.6 MB
Events in quadrant A7,783,208745,764
Events in quadrant B8,118,913743,833
Events in quadrant C7,935,096721,251
Events in quadrant D7,497,274711,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278965
B0287961
C0282871
D0270421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A663870.105453%
B6638480.723109%
C6638110.165713%
D6639440.662750%

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 7148 6639 256 256 3.58% 3.86%
B 7148 6639 278 278 3.89% 4.19%
C 7148 6639 213 213 2.98% 3.21%
D 7149 6640 263 263 3.68% 3.96%

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 0 253 81397 164.35 2002 2018 483.0
A 4 2 17967 33.02 2002 2018 483.0
A 11 79 8574 13.57 2002 2018 483.0
B 5 191 149452 303.99 2066 2072 484.8
B 4 172 32012 61.75 2066 2072 484.8
B 4 217 19343 35.62 2066 2072 484.8
C 15 241 338217 626.72 1920 1989 536.5
C 3 79 44906 80.0 1920 1989 536.5
C 3 111 34973 61.48 1920 1989 536.5
D 2 216 136850 236.14 1884 1948 571.3
D 10 102 80761 137.96 1884 1948 571.3
D 13 73 70481 119.96 1884 1948 571.3

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