ASTROSAT CZTI

Data Quality Report

Orbit 48709

Creation date: 2024-09-30T09:49:21.399248
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_037T01_9000006436_48709cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48709cztM0_level2_quad_clean.evt
Size (bytes)430,833,600106,675,200
Size410.9 MB 101.7 MB
Events in quadrant A6,861,395683,945
Events in quadrant B2,927,781738,282
Events in quadrant C2,827,292713,313
Events in quadrant D2,829,153643,777

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246152
B0134352
C0132902
D0134952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64673485.381166%
B6467741.144271%
C6467230.355652%
D6467310.479357%

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 7602 6468 172 172 2.26% 2.66%
B 7602 6468 3 3 0.04% 0.05%
C 7602 6468 0 0 0.00% 0.00%
D 7602 6468 22 22 0.29% 0.34%

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 4015268 27472.59 701 686 146.1
A 13 248 131324 893.98 701 686 146.1
A 13 254 12548 81.17 701 686 146.1
B 12 16 43892 307.39 716 694 140.5
B 10 7 24476 169.23 716 694 140.5
B 12 111 18129 124.06 716 694 140.5
C 3 233 28455 165.36 711 715 167.8
C 14 254 10834 60.32 711 715 167.8
C 12 2 10752 59.83 711 715 167.8
D 7 55 42049 238.55 698 677 173.4
D 5 32 38449 217.79 698 677 173.4
D 2 233 31621 178.42 698 677 173.4

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