ASTROSAT CZTI

Data Quality Report

Orbit 20181007_A05_069T04_9000002418_level2

Creation date: 2025-11-25T02:57:12.428044
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_069T04_9000002418cztM0_level2.fits modeM0/AS1A05_069T04_9000002418cztM0_level2_quad_clean.evt
Size (bytes)673,724,160623,436,480
Size642.5 MB 594.6 MB
Events in quadrant A4,141,2783,665,322
Events in quadrant B3,975,3903,714,862
Events in quadrant C4,016,8403,527,184
Events in quadrant D3,500,1723,204,418

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01554550
B01630640
C01579190
D01585770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6953418442.651940%
B6953419692.831708%
C6953417182.470734%
D6953413942.004775%

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 80409 69522 0 0 0.00% 0.00%
B 80409 69513 0 0 0.00% 0.00%
C 80409 69529 0 0 0.00% 0.00%
D 80409 69525 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 3830 10.74 1076 1009 262.7
A 7 110 3311 8.76 1076 1009 262.7
A 0 30 3093 7.93 1076 1009 262.7
B 2 9 3276 10.81 1053 1004 210.3
B 2 8 2726 8.19 1053 1004 210.3
B 5 128 2658 7.87 1053 1004 210.3
C 12 241 2848 6.77 1060 988 274.6
C 2 191 2725 6.32 1060 988 274.6
C 3 126 2625 5.96 1060 988 274.6
D 6 231 2557 6.19 998 907 266.6
D 3 14 2524 6.07 998 907 266.6
D 10 189 2462 5.83 998 907 266.6

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