ASTROSAT CZTI

Data Quality Report

Orbit 20181124_A05_004T04_9000002534_level2

Creation date: 2025-11-26T00:47:25.316535
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/AS1A05_004T04_9000002534cztM0_level2.fits modeM0/AS1A05_004T04_9000002534cztM0_level2_quad_clean.evt
Size (bytes)682,214,400594,581,760
Size650.6 MB 567.0 MB
Events in quadrant A4,184,2683,442,073
Events in quadrant B4,029,8803,443,936
Events in quadrant C4,034,3683,236,674
Events in quadrant D3,522,9962,994,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01465240
B01520670
C01715690
D01608770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014540
B014540
C014540
D014540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A712869431.322840%
B7128611291.583761%
C7128614592.046685%
D7128617252.419830%

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 82331 71282 0 0 0.00% 0.00%
B 82331 71280 0 0 0.00% 0.00%
C 82331 71283 0 0 0.00% 0.00%
D 82331 71271 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 0 29 4015 11.1 1088 1020 269.8
A 7 110 3344 8.61 1088 1020 269.8
A 0 30 3207 8.11 1088 1020 269.8
B 2 9 3245 10.69 1066 1018 208.2
B 2 8 2770 8.41 1066 1018 208.2
B 3 17 2695 8.05 1066 1018 208.2
C 2 191 2702 6.24 1067 997 273.1
C 3 126 2662 6.1 1067 997 273.1
C 9 242 2642 6.02 1067 997 273.1
D 3 14 2649 6.54 1003 912 265.8
D 6 231 2541 6.13 1003 912 265.8
D 10 189 2432 5.72 1003 912 265.8

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