ASTROSAT CZTI

Data Quality Report

Orbit 03977

Creation date: 2024-06-27T14:35:53.386053
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/AS1G05_247T01_9000000512_03977cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_03977cztM0_level2_quad_clean.evt
Size (bytes)504,846,720102,576,960
Size481.5 MB 97.8 MB
Events in quadrant A3,251,683683,846
Events in quadrant B5,482,099642,038
Events in quadrant C3,101,942672,059
Events in quadrant D3,014,058656,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141883
B0206672
C0138512
D0137872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470821.267388%
B647077111.916538%
C6470580.896445%
D6470640.989181%

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 6471 30 30 0.40% 0.46%
B 7565 6471 492 492 6.50% 7.60%
C 7565 6471 41 41 0.54% 0.63%
D 7565 6471 33 33 0.44% 0.51%

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 0 118 186183 1232.04 736 720 150.5
A 0 50 158357 1047.19 736 720 150.5
A 0 226 24744 159.59 736 720 150.5
B 14 167 2297792 16938.22 711 696 135.6
B 15 204 202044 1484.69 711 696 135.6
B 4 81 113928 834.95 711 696 135.6
C 9 144 321273 1964.34 706 710 163.2
C 10 65 10770 61.65 706 710 163.2
C 8 128 6492 35.43 706 710 163.2
D 2 232 144381 857.19 703 683 167.6
D 2 14 41399 242.88 703 683 167.6
D 2 32 25730 149.41 703 683 167.6

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