ASTROSAT CZTI

Data Quality Report

Orbit 27996

Creation date: 2024-06-27T19:46:52.355537
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_27996cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27996cztM0_level2_quad_clean.evt
Size (bytes)515,119,68097,839,360
Size491.3 MB 93.3 MB
Events in quadrant A3,504,162652,977
Events in quadrant B3,569,999652,644
Events in quadrant C3,764,860604,614
Events in quadrant D4,330,247609,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142480
B0145710
C0152630
D0173790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63551071.683714%
B63551552.439024%
C63552223.493312%
D63541211.904312%

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 7565 6355 2 2 0.03% 0.03%
B 7565 6355 5 5 0.07% 0.08%
C 7565 6355 25 25 0.33% 0.39%
D 7564 6354 100 100 1.32% 1.57%

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 4 2 28103 152.38 899 883 178.6
A 8 192 10218 52.26 899 883 178.6
A 13 254 9090 45.94 899 883 178.6
B 10 245 101594 600.83 882 861 167.7
B 12 111 20540 117.38 882 861 167.7
B 11 111 18759 106.75 882 861 167.7
C 3 233 252322 1281.06 841 848 196.3
C 14 238 136528 691.18 841 848 196.3
C 10 22 67558 339.83 841 848 196.3
D 1 52 585046 2890.73 857 839 202.1
D 8 195 364056 1797.25 857 839 202.1
D 7 223 70055 342.49 857 839 202.1

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