ASTROSAT CZTI

Data Quality Report

Orbit 40794

Creation date: 2024-06-27T22:20:34.975416
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_095T02_9000005568_40794cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40794cztM0_level2_quad_clean.evt
Size (bytes)312,416,64084,686,400
Size297.9 MB 80.8 MB
Events in quadrant A2,677,108573,296
Events in quadrant B3,336,035582,897
Events in quadrant C2,510,528561,359
Events in quadrant D2,666,970510,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108453
B0130532
C0103342
D0112652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4799310.645968%
B47992535.271932%
C4799691.437800%
D4799831.729527%

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 6922 4800 27 27 0.39% 0.56%
B 6922 4800 165 165 2.38% 3.44%
C 6922 4800 62 62 0.90% 1.29%
D 6922 4800 76 76 1.10% 1.58%

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 457778 4097.06 545 535 111.6
A 6 10 47494 420.77 545 535 111.6
A 10 255 21643 189.13 545 535 111.6
B 7 202 1085109 10308.29 544 528 105.2
B 5 255 67069 632.43 544 528 105.2
B 0 190 20001 185.08 544 528 105.2
C 15 214 206432 1646.83 536 540 125.0
C 0 10 161089 1284.15 536 540 125.0
C 14 254 47204 373.24 536 540 125.0
D 2 249 386122 2949.21 526 512 130.8
D 1 47 119813 912.43 526 512 130.8
D 13 249 98941 752.8 526 512 130.8

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