ASTROSAT CZTI

Data Quality Report

Orbit 51189

Creation date: 2025-03-17T09:11:27.964148
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/AS1C07_001T01_9000006454_51189cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51189cztM0_level2_quad_clean.evt
Size (bytes)700,822,08085,187,520
Size668.4 MB 81.2 MB
Events in quadrant A5,309,792598,202
Events in quadrant B4,400,814665,516
Events in quadrant C11,674,918308,146
Events in quadrant D4,062,679562,349

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202372
B0174982
C0389712
D0166602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63762654.156211%
B63762233.497491%
C6376340653.419072%
D63761171.835006%

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 7541 6377 172 172 2.28% 2.70%
B 7541 6377 113 113 1.50% 1.77%
C 7540 6376 2893 2893 38.37% 45.37%
D 7541 6377 156 156 2.07% 2.45%

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 3 798099 4838.48 657 641 164.8
A 9 160 630550 3821.9 657 641 164.8
A 13 248 450305 2728.28 657 641 164.8
B 8 128 525141 3757.27 664 642 139.6
B 10 254 275201 1966.82 664 642 139.6
B 7 252 180955 1291.68 664 642 139.6
C 4 12 8516479 67683.8 450 447 125.8
C 12 247 557405 4426.6 450 447 125.8
C 13 3 234356 1859.06 450 447 125.8
D 3 12 774378 4256.13 642 619 181.8
D 2 216 102110 558.26 642 619 181.8
D 6 42 86096 470.17 642 619 181.8

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