ASTROSAT CZTI

Data Quality Report

Orbit 08236

Creation date: 2024-06-27T15:29:51.554200
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/AS1G07_070T01_9000001138_08236cztM0_level2.evt modeM0/AS1G07_070T01_9000001138_08236cztM0_level2_quad_clean.evt
Size (bytes)478,707,84096,880,320
Size456.5 MB 92.4 MB
Events in quadrant A3,400,856628,715
Events in quadrant B3,593,125634,129
Events in quadrant C3,205,664620,152
Events in quadrant D3,856,666597,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141883
B0146332
C0137492
D0156812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64892634.053013%
B64892573.960549%
C64892023.112960%
D64892774.268763%

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 8909 6489 16 16 0.18% 0.25%
B 8909 6489 22 22 0.25% 0.34%
C 8909 6489 0 0 0.00% 0.00%
D 8909 6489 42 42 0.47% 0.65%

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 5 16 68676 391.6 854 834 173.2
A 8 15 37256 210.24 854 834 173.2
A 0 226 8102 41.95 854 834 173.2
B 11 51 107536 662.03 846 828 161.2
B 10 16 75802 465.15 846 828 161.2
B 0 214 60978 373.18 846 828 161.2
C 13 61 6951 32.45 818 821 188.9
C 13 255 5153 22.93 818 821 188.9
C 7 237 4431 19.11 818 821 188.9
D 13 105 441565 2199.28 825 800 200.4
D 1 52 181233 900.31 825 800 200.4
D 13 122 61662 303.68 825 800 200.4

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