ASTROSAT CZTI

Data Quality Report

Orbit 24391

Creation date: 2024-06-27T19:05:30.105763
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/AS1A08_008T01_9000003596_24391cztM0_level2.evt modeM0/AS1A08_008T01_9000003596_24391cztM0_level2_quad_clean.evt
Size (bytes)611,498,88094,403,520
Size583.2 MB 90.0 MB
Events in quadrant A3,057,881625,975
Events in quadrant B3,310,341640,963
Events in quadrant C7,302,099582,567
Events in quadrant D4,427,359573,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128592
B0135702
C0261792
D0172482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6241240.384554%
B62411241.986861%
C62414857.771191%
D62413245.191476%

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 7531 6242 1 1 0.01% 0.02%
B 7531 6242 10 10 0.13% 0.16%
C 7531 6242 52 52 0.69% 0.83%
D 7531 6242 263 263 3.49% 4.21%

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 6 10 17856 109.29 787 772 156.3
A 13 254 10606 62.91 787 772 156.3
A 3 137 6792 38.51 787 772 156.3
B 15 33 174118 1186.03 788 769 146.2
B 0 190 26216 174.1 788 769 146.2
B 12 111 17163 112.17 788 769 146.2
C 7 247 4223898 24777.12 747 753 170.4
C 14 238 122216 712.62 747 753 170.4
C 2 16 21550 122.02 747 753 170.4
D 1 52 1119339 6200.96 749 727 180.4
D 12 233 307358 1699.79 749 727 180.4
D 12 218 50144 273.94 749 727 180.4

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