ASTROSAT CZTI

Data Quality Report

Orbit 44627

Creation date: 2024-06-27T23:04:41.539399
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/AS1A13_072T01_9000006008_44627cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44627cztM0_level2_quad_clean.evt
Size (bytes)1,051,205,760217,218,240
Size1002.5 MB 207.2 MB
Events in quadrant A10,156,6881,473,376
Events in quadrant B6,590,7201,530,004
Events in quadrant C6,771,3891,442,137
Events in quadrant D14,307,3461,160,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419272
B0295472
C0302872
D0523842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140383922.792421%
B140382371.688275%
C140391671.189543%
D14039219015.599402%

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 15103 14040 10 10 0.07% 0.07%
B 15103 14040 19 19 0.13% 0.14%
C 15104 14041 52 52 0.34% 0.37%
D 15104 14041 1767 1767 11.70% 12.58%

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 3785174 11720.83 1564 1526 322.8
A 15 223 188985 580.7 1564 1526 322.8
A 13 248 93518 284.97 1564 1526 322.8
B 0 186 184123 595.75 1557 1507 306.5
B 0 189 57028 181.13 1557 1507 306.5
B 0 199 44571 140.49 1557 1507 306.5
C 12 2 233511 649.9 1526 1532 356.9
C 14 254 139747 387.21 1526 1532 356.9
C 3 233 100285 276.66 1526 1532 356.9
D 13 249 3859322 10684.96 1442 1393 361.1
D 1 52 2141564 5927.44 1442 1393 361.1
D 2 249 1102038 3048.36 1442 1393 361.1

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