ASTROSAT CZTI

Data Quality Report

Orbit 27979

Creation date: 2024-06-27T19:46:41.728531
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/AS1A10_065T03_9000004040_27979cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27979cztM0_level2_quad_clean.evt
Size (bytes)580,014,72073,762,560
Size553.1 MB 70.3 MB
Events in quadrant A3,603,140466,868
Events in quadrant B3,664,066466,972
Events in quadrant C3,675,664442,219
Events in quadrant D6,200,853421,932

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146780
B0149560
C0150740
D0231390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6233911.459971%
B62331252.005455%
C62321772.840180%
D62326059.707959%

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 7548 6234 1 1 0.01% 0.02%
B 7548 6234 12 12 0.16% 0.19%
C 7547 6233 1 1 0.01% 0.02%
D 7547 6232 467 467 6.19% 7.49%

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 8 192 9202 45.21 931 916 183.3
A 13 254 8625 42.06 931 916 183.3
A 3 137 8137 39.4 931 916 183.3
B 15 33 28208 158.86 927 909 171.8
B 12 111 20302 112.85 927 909 171.8
B 11 111 18834 104.31 927 909 171.8
C 14 238 146346 707.42 896 906 205.6
C 2 16 23591 110.34 896 906 205.6
C 3 233 14408 65.67 896 906 205.6
D 1 52 2299748 11312.88 867 848 203.2
D 8 195 477562 2345.91 867 848 203.2
D 6 112 57188 277.25 867 848 203.2

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