ASTROSAT CZTI

Data Quality Report

Orbit 00819

Creation date: 2024-06-27T14:03:24.158018
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/AS1P01_010T01_9000000112_00819cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00819cztM0_level2_quad_clean.evt
Size (bytes)1,736,470,080161,789,760
Size1.6 GB 154.3 MB
Events in quadrant A13,154,0551,044,764
Events in quadrant B13,704,1181,045,810
Events in quadrant C12,879,4591,035,451
Events in quadrant D12,128,8451,017,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468890
B0484630
C0460330
D0438810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10915980.897847%
B109151050.961979%
C109151111.016949%
D10915980.897847%

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 12415 10915 386 386 3.11% 3.54%
B 12415 10915 416 416 3.35% 3.81%
C 12415 10915 411 411 3.31% 3.77%
D 12415 10915 309 309 2.49% 2.83%

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 15 233 247849 297.75 3362 3377 821.1
A 11 79 14542 13.6 3362 3377 821.1
A 3 111 9722 7.73 3362 3377 821.1
B 0 220 104634 122.81 3502 3519 823.4
B 2 2 48402 54.51 3502 3519 823.4
B 15 255 47901 53.9 3502 3519 823.4
C 15 241 223270 250.3 3139 3245 879.0
C 9 52 220462 247.11 3139 3245 879.0
C 3 79 69943 75.88 3139 3245 879.0
D 13 200 147846 152.68 3066 3187 947.5
D 13 169 98094 100.17 3066 3187 947.5
D 1 4 96411 98.39 3066 3187 947.5

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