ASTROSAT CZTI

Data Quality Report

Orbit 40938

Creation date: 2024-06-27T22:22:27.524097
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_9000005582_40938cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40938cztM0_level2_quad_clean.evt
Size (bytes)318,533,76088,767,360
Size303.8 MB 84.7 MB
Events in quadrant A2,746,870615,280
Events in quadrant B2,351,016627,150
Events in quadrant C2,979,759570,948
Events in quadrant D3,323,728524,022

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111563
B0103122
C0118742
D0132082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5000180.360000%
B5000190.380000%
C50001663.320000%
D50002695.380000%

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 7063 5001 4 4 0.06% 0.08%
B 7063 5001 7 7 0.10% 0.14%
C 7063 5001 150 150 2.12% 3.00%
D 7063 5001 255 255 3.61% 5.10%

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 492959 4185.83 577 565 117.6
A 13 6 10397 83.58 577 565 117.6
A 7 3 10118 81.21 577 565 117.6
B 5 255 62963 571.66 573 558 109.2
B 0 186 34600 311.84 573 558 109.2
B 12 111 13361 117.28 573 558 109.2
C 14 254 310695 2469.65 546 551 125.6
C 0 10 238067 1891.32 546 551 125.6
C 15 214 230650 1832.26 546 551 125.6
D 13 249 817855 6116.15 549 534 133.6
D 2 249 107574 801.0 549 534 133.6
D 1 52 97497 725.59 549 534 133.6

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