ASTROSAT CZTI

Data Quality Report

Orbit 15134

Creation date: 2024-06-27T17:04:11.077621
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/AS1A04_218T03_9000002232_15134cztM0_level2.evt modeM0/AS1A04_218T03_9000002232_15134cztM0_level2_quad_clean.evt
Size (bytes)414,146,88073,702,080
Size395.0 MB 70.3 MB
Events in quadrant A3,069,530460,442
Events in quadrant B3,089,100462,607
Events in quadrant C3,155,552454,124
Events in quadrant D2,825,636440,900

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129232
B0129781
C0128211
D0125551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916330.557809%
B5916861.453685%
C5916280.473293%
D5916590.997295%

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 6792 5917 1 1 0.01% 0.02%
B 6792 5918 29 29 0.43% 0.49%
C 6792 5918 4 4 0.06% 0.07%
D 6792 5918 34 34 0.50% 0.57%

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 11 29 256267 1758.64 706 690 145.3
A 12 189 42083 284.83 706 690 145.3
A 1 162 16824 111.02 706 690 145.3
B 3 64 203474 1498.87 706 688 135.3
B 0 190 40466 294.02 706 688 135.3
B 0 230 17629 125.22 706 688 135.3
C 3 233 450556 2823.14 686 689 159.3
C 0 207 19253 116.5 686 689 159.3
C 10 22 8226 47.3 686 689 159.3
D 7 38 46396 268.02 687 665 170.6
D 13 172 41211 237.63 687 665 170.6
D 10 70 40562 233.83 687 665 170.6

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