ASTROSAT CZTI

Data Quality Report

Orbit 38602

Creation date: 2024-06-27T21:53:59.011940
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_052T04_9000005388_38602cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38602cztM0_level2_quad_clean.evt
Size (bytes)352,889,28098,314,560
Size336.5 MB 93.8 MB
Events in quadrant A3,148,725665,594
Events in quadrant B3,145,106682,120
Events in quadrant C2,833,525644,956
Events in quadrant D3,484,513580,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128303
B0130782
C0118882
D0143222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5790230.397237%
B5790460.794473%
C5790160.276339%
D57902093.609672%

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 9015 5792 16 16 0.18% 0.28%
B 9015 5792 19 19 0.21% 0.33%
C 9015 5792 10 10 0.11% 0.17%
D 9015 5792 202 202 2.24% 3.49%

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 429437 3242.74 655 641 132.2
A 13 248 138993 1046.28 655 641 132.2
A 13 6 19396 141.83 655 641 132.2
B 0 183 195382 1544.81 655 639 126.1
B 5 200 148877 1175.91 655 639 126.1
B 5 172 52182 408.87 655 639 126.1
C 15 214 238150 1588.77 642 645 149.5
C 14 254 34085 223.69 642 645 149.5
C 1 23 22976 149.38 642 645 149.5
D 12 227 206987 1347.68 631 613 153.1
D 13 249 201400 1311.2 631 613 153.1
D 1 47 153880 1000.88 631 613 153.1

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