ASTROSAT CZTI

Data Quality Report

Orbit 13026

Creation date: 2024-06-27T16:35:31.226726
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/AS1A04_149T01_9000001918_13026cztM0_level2.evt modeM0/AS1A04_149T01_9000001918_13026cztM0_level2_quad_clean.evt
Size (bytes)514,566,720101,350,080
Size490.7 MB 96.7 MB
Events in quadrant A3,207,625680,588
Events in quadrant B4,768,487624,559
Events in quadrant C3,086,887698,381
Events in quadrant D4,099,393632,422

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132663
B0181012
C0129402
D0160842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204300.483559%
B620490514.587363%
C6204260.419084%
D62043145.061251%

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 7520 6206 3 3 0.04% 0.05%
B 7520 6206 473 473 6.29% 7.62%
C 7520 6206 3 3 0.04% 0.05%
D 7520 6206 213 213 2.83% 3.43%

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 12 189 69879 440.98 780 767 156.7
A 1 162 38197 238.83 780 767 156.7
A 15 223 35218 219.82 780 767 156.7
B 4 239 1768333 13575.84 712 693 130.2
B 3 64 143834 1099.35 712 693 130.2
B 0 230 24684 184.26 712 693 130.2
C 14 234 18569 99.18 785 789 179.3
C 13 61 5764 27.75 785 789 179.3
C 8 222 5096 24.02 785 789 179.3
D 1 52 920330 5214.19 751 733 176.4
D 8 195 287830 1627.86 751 733 176.4
D 14 34 22590 123.93 751 733 176.4

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