ASTROSAT CZTI

Data Quality Report

Orbit 39636

Creation date: 2024-06-27T22:07:08.091576
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_018T01_9000005488_39636cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39636cztM0_level2_quad_clean.evt
Size (bytes)457,237,44087,696,000
Size436.1 MB 83.6 MB
Events in quadrant A4,236,632608,944
Events in quadrant B2,782,950626,179
Events in quadrant C6,318,930531,229
Events in quadrant D3,205,299544,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159663
B0115172
C0221962
D0130102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49221192.417716%
B4922761.544088%
C492283917.045916%
D49222174.408777%

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 7045 4923 110 110 1.56% 2.23%
B 7045 4923 50 50 0.71% 1.02%
C 7045 4923 835 835 11.85% 16.96%
D 7045 4923 182 182 2.58% 3.70%

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 15 222 1643215 14736.72 555 544 111.5
A 10 83 434418 3892.37 555 544 111.5
A 13 254 6693 55.16 555 544 111.5
B 5 172 279405 2677.08 555 540 104.2
B 5 255 266617 2554.31 555 540 104.2
B 4 170 20349 190.16 555 540 104.2
C 15 208 2874028 23678.53 526 530 121.4
C 9 187 1150181 9473.49 526 530 121.4
C 15 214 197953 1626.83 526 530 121.4
D 13 249 765766 5737.72 548 533 133.4
D 1 52 146921 1097.62 548 533 133.4
D 13 171 58617 435.51 548 533 133.4

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