ASTROSAT CZTI

Data Quality Report

Orbit 37982

Creation date: 2024-06-27T21:46:56.493428
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/AS1A11_082T01_9000005356_37982cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37982cztM0_level2_quad_clean.evt
Size (bytes)494,308,80045,648,000
Size471.4 MB 43.5 MB
Events in quadrant A9,580,425125,835
Events in quadrant B2,862,811303,346
Events in quadrant C2,702,841306,820
Events in quadrant D2,740,385276,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321083
B0117182
C0108762
D0114722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283268150.747681%
B5283881.665720%
C528350.094643%
D5283330.624645%

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 7196 5284 2288 2288 31.80% 43.30%
B 7196 5284 54 54 0.75% 1.02%
C 7196 5284 1 1 0.01% 0.02%
D 7196 5284 26 26 0.36% 0.49%

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 15 222 7224633 68796.2 519 509 105.0
A 10 83 282981 2690.01 519 509 105.0
A 12 16 35063 329.06 519 509 105.0
B 4 67 165514 1376.36 631 616 119.8
B 5 172 98251 814.93 631 616 119.8
B 5 184 47209 388.9 631 616 119.8
C 15 214 226265 1560.12 628 632 144.6
C 14 254 11974 78.42 628 632 144.6
C 0 10 6423 40.04 628 632 144.6
D 10 199 77997 509.04 623 608 152.0
D 5 157 65847 429.13 623 608 152.0
D 13 249 38320 248.06 623 608 152.0

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