ASTROSAT CZTI

Data Quality Report

Orbit 39136

Creation date: 2024-06-27T22:01:00.642243
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_083T07_9000005440_39136cztM0_level2.fits modeM0/AS1A12_083T07_9000005440_39136cztM0_level2_quad_clean.evt
Size (bytes)618,632,64083,488,320
Size590.0 MB 79.6 MB
Events in quadrant A3,022,188638,625
Events in quadrant B2,547,634646,216
Events in quadrant C5,594,577515,383
Events in quadrant D11,293,246328,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126342
B0115962
C0204762
D0374472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5699300.526408%
B569990.157922%
C569997617.125812%
D5699281549.394631%

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 8355 5701 17 17 0.20% 0.30%
B 8355 5701 2 2 0.02% 0.04%
C 8355 5701 782 782 9.36% 13.72%
D 8355 5700 2723 2723 32.59% 47.77%

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 446363 3473.7 631 618 128.3
A 14 235 90413 699.77 631 618 128.3
A 15 223 23613 179.2 631 618 128.3
B 5 172 44008 353.71 628 609 122.7
B 12 111 15315 119.86 628 609 122.7
B 11 111 14005 109.18 628 609 122.7
C 9 187 3125559 23879.8 559 562 130.9
C 15 214 220017 1676.98 559 562 130.9
C 1 16 63803 483.26 559 562 130.9
D 12 235 8362988 70506.91 481 468 118.6
D 5 222 766364 6457.5 481 468 118.6
D 2 249 87430 733.2 481 468 118.6

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