ASTROSAT CZTI

Data Quality Report

Orbit 25715

Creation date: 2024-06-27T19:20:42.867317
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/AS1A09_008T06_9000003748_25715cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25715cztM0_level2_quad_clean.evt
Size (bytes)944,231,040144,892,800
Size900.5 MB 138.2 MB
Events in quadrant A6,520,697882,420
Events in quadrant B6,076,797920,258
Events in quadrant C5,875,079878,963
Events in quadrant D9,282,924846,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272790
B0255180
C0252240
D0358910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124264423.557058%
B124261341.078384%
C124261401.126670%
D124264933.967488%

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 13676 12426 164 164 1.20% 1.32%
B 13676 12428 5 5 0.04% 0.04%
C 13676 12428 0 0 0.00% 0.00%
D 13676 12428 365 365 2.67% 2.94%

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 13 815549 2725.83 1479 1447 298.7
A 13 254 18774 58.01 1479 1447 298.7
A 3 137 13804 41.37 1479 1447 298.7
B 0 219 75426 257.81 1498 1460 286.9
B 0 245 48420 163.68 1498 1460 286.9
B 0 190 39676 133.2 1498 1460 286.9
C 14 238 227714 675.63 1433 1440 334.9
C 3 233 57296 166.78 1433 1440 334.9
C 13 61 9914 25.3 1433 1440 334.9
D 1 52 2806676 7991.7 1444 1403 351.0
D 7 80 745530 2119.88 1444 1403 351.0
D 8 195 114881 323.28 1444 1403 351.0

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