ASTROSAT CZTI

Data Quality Report

Orbit 17128

Creation date: 2024-06-27T17:32:31.287037
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_056T01_9000002540_17128cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17128cztM0_level2_quad_clean.evt
Size (bytes)682,050,24096,281,280
Size650.5 MB 91.8 MB
Events in quadrant A4,281,605595,074
Events in quadrant B4,321,709603,117
Events in quadrant C5,441,435565,668
Events in quadrant D6,030,355556,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185462
B0184242
C0216982
D0237502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85705065.904317%
B85705586.511085%
C85706337.386231%
D85718469.870494%

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 8790 8570 0 0 0.00% 0.00%
B 8790 8571 0 0 0.00% 0.00%
C 8790 8571 3 3 0.03% 0.04%
D 8791 8571 360 360 4.10% 4.20%

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 12 189 21438 89.43 1105 1080 227.6
A 4 2 11086 43.95 1105 1080 227.6
A 0 226 9441 36.73 1105 1080 227.6
B 12 111 27709 121.68 1099 1069 218.9
B 11 111 24120 105.29 1099 1069 218.9
B 14 111 21177 91.84 1099 1069 218.9
C 3 233 1116255 4399.59 1060 1065 253.5
C 14 238 156144 611.81 1060 1065 253.5
C 8 128 15702 57.75 1060 1065 253.5
D 5 222 1993328 7535.46 1068 1038 264.4
D 2 234 29669 108.29 1068 1038 264.4
D 7 38 20324 72.94 1068 1038 264.4

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