ASTROSAT CZTI

Data Quality Report

Orbit 23314

Creation date: 2024-06-27T18:52:40.900584
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/AS1A07_148T02_9000003444_23314cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23314cztM0_level2_quad_clean.evt
Size (bytes)1,556,763,840254,419,200
Size1.4 GB 242.6 MB
Events in quadrant A10,331,7771,579,718
Events in quadrant B10,335,0641,610,833
Events in quadrant C10,516,5381,550,519
Events in quadrant D14,536,5951,509,764

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04280
B04280
C04280
D04280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0441404
B0438864
C0439594
D0572275

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A211392000.946119%
B211401400.662252%
C211402301.087985%
D2113910094.773168%

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 24430 21143 70 70 0.29% 0.33%
B 24431 21143 5 5 0.02% 0.02%
C 24431 21143 1 1 0.00% 0.00%
D 24430 21142 777 777 3.18% 3.68%

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 6 16 302884 575.85 2602 2543 521.6
A 13 254 34100 60.51 2602 2543 521.6
A 3 137 22619 38.49 2602 2543 521.6
B 12 111 60571 116.92 2590 2520 496.5
B 11 111 53899 103.49 2590 2520 496.5
B 4 173 49421 94.47 2590 2520 496.5
C 14 238 397284 671.5 2515 2530 587.9
C 10 9 188648 316.6 2515 2530 587.9
C 0 239 61793 100.81 2515 2530 587.9
D 1 52 3156139 5168.28 2516 2447 610.2
D 7 238 1438072 2352.71 2516 2447 610.2
D 1 239 210851 341.53 2516 2447 610.2

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