ASTROSAT CZTI

Data Quality Report

Orbit 41128

Creation date: 2024-06-27T22:24:48.904525
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/AS1A12_052T04_9000005602_41128cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41128cztM0_level2_quad_clean.evt
Size (bytes)347,921,28092,836,800
Size331.8 MB 88.5 MB
Events in quadrant A2,865,768635,224
Events in quadrant B2,711,583639,335
Events in quadrant C2,787,114607,249
Events in quadrant D4,110,153565,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114813
B0113392
C0113822
D0158552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5194140.269542%
B5194360.693107%
C5194631.212938%
D51941372.637659%

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 7346 5195 2 2 0.03% 0.04%
B 7346 5195 16 16 0.22% 0.31%
C 7346 5195 64 64 0.87% 1.23%
D 7346 5195 119 119 1.62% 2.29%

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 10 83 513082 4184.64 606 596 122.5
A 13 254 9126 69.65 606 596 122.5
A 3 137 6460 47.88 606 596 122.5
B 0 245 165773 1456.76 595 581 113.4
B 0 186 77465 678.01 595 581 113.4
B 4 81 48079 418.87 595 581 113.4
C 15 214 223898 1655.82 578 581 134.9
C 0 10 188564 1393.83 578 581 134.9
C 14 254 112950 833.18 578 581 134.9
D 2 16 1151265 8132.66 583 566 141.5
D 13 249 335043 2363.94 583 566 141.5
D 2 249 181262 1277.08 583 566 141.5

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