ASTROSAT CZTI

Data Quality Report

Orbit 27177

Creation date: 2024-06-27T19:37:23.584432
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/AS1T03_243T01_9000003918_27177cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27177cztM0_level2_quad_clean.evt
Size (bytes)1,039,835,520144,576,000
Size991.7 MB 137.9 MB
Events in quadrant A6,554,155917,436
Events in quadrant B6,090,851936,649
Events in quadrant C5,918,967892,843
Events in quadrant D12,087,985772,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272350
B0256200
C0253370
D0442630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124162111.699420%
B124161761.417526%
C124162011.618879%
D12416189715.278673%

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 13626 12418 48 48 0.35% 0.39%
B 13626 12417 9 9 0.07% 0.07%
C 13626 12417 0 0 0.00% 0.00%
D 13626 12417 1551 1551 11.38% 12.49%

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 6 16 596130 1937.89 1517 1484 306.9
A 0 13 70825 225.98 1517 1484 306.9
A 13 254 20026 60.43 1517 1484 306.9
B 0 190 47546 159.22 1514 1474 289.4
B 12 111 36311 120.39 1514 1474 289.4
B 11 111 32500 107.22 1514 1474 289.4
C 14 238 230387 669.78 1452 1461 341.8
C 8 128 12806 33.19 1452 1461 341.8
C 13 61 9850 24.54 1452 1461 341.8
D 12 1 3610727 11106.99 1371 1340 325.0
D 1 52 2131094 6553.79 1371 1340 325.0
D 12 233 759754 2333.83 1371 1340 325.0

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