ASTROSAT CZTI

Data Quality Report

Orbit 34746

Creation date: 2022-03-03T11:49:12.520308
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/AS1A10_048T04_9000004984_34746cztM0_level2.evt modeM0/AS1A10_048T04_9000004984_34746cztM0_level2_quad_clean.evt
Size (bytes)226,949,76030,032,640
Size216.4 MB 28.6 MB
Events in quadrant A1,397,606176,809
Events in quadrant B1,661,790177,605
Events in quadrant C1,475,699179,048
Events in quadrant D2,139,360168,517

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060181
B067591
C060651
D083441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289890.310559%
B2898200.690131%
C2898200.690131%
D2898953.278123%

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 4301 2899 3 3 0.07% 0.10%
B 4301 2899 6 6 0.14% 0.21%
C 4301 2899 10 10 0.23% 0.34%
D 4301 2899 64 64 1.49% 2.21%

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 24812 348.2 338 331 70.3
A 15 169 24705 346.67 338 331 70.3
A 9 143 12390 171.52 338 331 70.3
B 0 190 143831 2154.18 336 327 66.6
B 5 172 98525 1474.08 336 327 66.6
B 5 255 85598 1280.03 336 327 66.6
C 15 214 122530 1548.98 329 330 78.9
C 0 10 60152 758.29 329 330 78.9
C 0 207 6993 84.46 329 330 78.9
D 8 195 457091 5580.5 326 317 81.9
D 2 250 205700 2509.2 326 317 81.9
D 12 6 109357 1332.16 326 317 81.9

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