ASTROSAT CZTI

Data Quality Report

Orbit 29488

Creation date: 2024-06-27T20:04:37.612667
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/AS1A10_064T03_9000004246_29488cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29488cztM0_level2_quad_clean.evt
Size (bytes)871,027,200106,312,320
Size830.7 MB 101.4 MB
Events in quadrant A3,296,320768,670
Events in quadrant B3,311,618784,081
Events in quadrant C4,384,057745,281
Events in quadrant D14,933,481451,942

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139361
B0139181
C0178661
D0489871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67111071.594397%
B6712761.132300%
C67122323.456496%
D6712521677.711561%

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 7531 6712 8 8 0.11% 0.12%
B 7532 6713 0 0 0.00% 0.00%
C 7532 6713 1 1 0.01% 0.01%
D 7532 6713 4493 4493 59.65% 66.93%

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 12 96 51538 302.67 834 816 167.6
A 5 98 18308 104.38 834 816 167.6
A 13 254 12530 69.9 834 816 167.6
B 0 190 21474 133.25 827 804 155.1
B 12 111 18533 114.29 827 804 155.1
B 11 111 16588 101.75 827 804 155.1
C 3 233 964097 5195.79 805 810 185.4
C 14 238 154548 829.23 805 810 185.4
C 7 247 79755 425.81 805 810 185.4
D 8 195 6323199 49616.04 539 523 127.4
D 1 52 5169395 40561.78 539 523 127.4
D 12 33 1207002 9467.62 539 523 127.4

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