ASTROSAT CZTI

Data Quality Report

Orbit 42318

Creation date: 2024-06-27T22:38:55.503619
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/AS1A12_102T01_9000005794_42318cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42318cztM0_level2_quad_clean.evt
Size (bytes)283,832,64082,189,440
Size270.7 MB 78.4 MB
Events in quadrant A2,805,152545,771
Events in quadrant B2,326,058554,097
Events in quadrant C2,226,446543,598
Events in quadrant D2,760,152495,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115762
B0106542
C099882
D0117942

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4981310.622365%
B4981480.963662%
C498130.060229%
D49811322.650070%

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 6774 4982 14 14 0.21% 0.28%
B 6774 4982 30 30 0.44% 0.60%
C 6774 4982 0 0 0.00% 0.00%
D 6774 4982 119 119 1.76% 2.39%

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 517032 4862.22 520 509 106.2
A 15 223 217888 2046.27 520 509 106.2
A 15 252 38131 354.15 520 509 106.2
B 5 172 157827 1556.94 519 503 101.0
B 3 112 49068 480.62 519 503 101.0
B 15 35 31811 309.84 519 503 101.0
C 15 214 209038 1735.04 516 519 120.2
C 12 249 4294 31.41 516 519 120.2
C 13 61 3450 24.39 516 519 120.2
D 12 6 260158 2109.44 506 493 123.1
D 2 249 187872 1522.21 506 493 123.1
D 13 249 153635 1244.08 506 493 123.1

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