ASTROSAT CZTI

Data Quality Report

Orbit 20221223_A12_025T11_9000005438_level2

Creation date: 2022-12-26T05:44:21.222888
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_025T11_9000005438cztM0_level2.fits modeM0/AS1A12_025T11_9000005438cztM0_level2_quad_clean.evt
Size (bytes)112,224,960129,401,280
Size107.0 MB 123.4 MB
Events in quadrant A682,046813,941
Events in quadrant B657,064811,945
Events in quadrant C665,664774,493
Events in quadrant D545,086669,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313860
B0256180
C0273870
D0504140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A122741411.148770%
B12274810.659932%
C122741060.863614%
D12274180314.689588%

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 18312 12274 0 0 0.00% 0.00%
B 18312 12274 0 0 0.00% 0.00%
C 18312 12274 0 0 0.00% 0.00%
D 18312 12270 0 0 0.00% 0.00%

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 14 95 551 8.43 178 168 45.4
A 9 19 548 8.36 178 168 45.4
A 7 110 543 8.25 178 168 45.4
B 2 9 557 10.79 173 166 36.2
B 3 80 513 9.57 173 166 36.2
B 5 255 477 8.58 173 166 36.2
C 3 158 471 6.54 176 166 46.7
C 3 187 449 6.06 176 166 46.7
C 9 233 445 5.98 176 166 46.7
D 7 3 480 7.92 155 142 42.7
D 6 83 433 6.82 155 142 42.7
D 4 160 411 6.3 155 142 42.7

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