ASTROSAT CZTI

Data Quality Report

Orbit 25475

Creation date: 2024-06-27T19:18:04.791854
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_085T02_9000003716_25475cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25475cztM0_level2_quad_clean.evt
Size (bytes)436,599,360102,407,040
Size416.4 MB 97.7 MB
Events in quadrant A3,134,191687,776
Events in quadrant B3,141,146693,158
Events in quadrant C3,173,481668,999
Events in quadrant D3,387,039653,760

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128040
B0128450
C0130360
D0135030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5689961.687467%
B56901131.985940%
C56901482.601054%
D56901422.495606%

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 6984 5690 0 0 0.00% 0.00%
B 6985 5691 0 0 0.00% 0.00%
C 6985 5691 0 0 0.00% 0.00%
D 6985 5691 53 53 0.76% 0.93%

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 13 254 8623 48.69 812 800 160.7
A 0 226 6992 38.54 812 800 160.7
A 3 137 6730 36.91 812 800 160.7
B 0 190 18285 118.97 795 779 147.2
B 12 111 17410 113.02 795 779 147.2
B 11 111 16026 103.61 795 779 147.2
C 14 238 126526 704.62 779 784 178.5
C 2 16 12625 66.35 779 784 178.5
C 13 61 5352 25.6 779 784 178.5
D 1 52 254249 1335.24 792 772 189.8
D 2 82 98750 516.12 792 772 189.8
D 8 195 35881 184.94 792 772 189.8

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