ASTROSAT CZTI

Data Quality Report

Orbit 20190321_A05_173T01_9000002812_level2

Creation date: 2025-11-28T22:35:20.589174
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/AS1A05_173T01_9000002812cztM0_level2.fits modeM0/AS1A05_173T01_9000002812cztM0_level2_quad_clean.evt
Size (bytes)1,653,917,7601,445,256,000
Size1.5 GB 1.3 GB
Events in quadrant A10,256,5088,491,006
Events in quadrant B9,748,9928,436,467
Events in quadrant C9,919,1988,047,364
Events in quadrant D8,594,9467,228,116

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034440
B034440
C034440
D034440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02460
B02460
C02460
D02460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03552690
B03735600
C03760810
D04192000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16882119631.162770%
B16882131141.844557%
C16882140292.386551%
D16882172284.281458%

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 203133 168819 0 0 0.00% 0.00%
B 203133 168819 0 0 0.00% 0.00%
C 203133 168818 0 0 0.00% 0.00%
D 203133 168707 0 0 0.00% 0.00%

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 29 8736 9.5 2672 2507 655.6
A 7 110 8411 9.01 2672 2507 655.6
A 9 19 7635 7.82 2672 2507 655.6
B 2 9 7774 10.47 2582 2457 508.0
B 2 8 6633 8.22 2582 2457 508.0
B 14 254 6481 7.92 2582 2457 508.0
C 12 241 7009 6.77 2620 2444 674.1
C 3 126 6742 6.38 2620 2444 674.1
C 12 250 6621 6.2 2620 2444 674.1
D 10 190 6482 6.53 2456 2236 650.1
D 3 14 6159 6.03 2456 2236 650.1
D 10 189 6075 5.91 2456 2236 650.1

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