ASTROSAT CZTI

Data Quality Report

Orbit 43157

Creation date: 2024-06-27T22:48:44.813799
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/AS1C07_001T10_9000005856_43157cztM0_level2.fits modeM0/AS1C07_001T10_9000005856_43157cztM0_level2_quad_clean.evt
Size (bytes)390,548,16079,329,600
Size372.5 MB 75.7 MB
Events in quadrant A3,630,502555,615
Events in quadrant B2,267,011578,430
Events in quadrant C2,331,256528,353
Events in quadrant D5,849,356398,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241
B0251
C0240
D0262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01403344
B01010110
C01009022
D02072016

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48581943.993413%
B4869160.328610%
C4861120.246863%
D4868117124.055053%

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 6998 4870 148 148 2.11% 3.04%
B 6998 4874 9 9 0.13% 0.18%
C 6998 4873 6 6 0.09% 0.12%
D 6998 4874 974 974 13.92% 19.98%

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 15 237 717780 6692.92 520 509 107.2
A 10 83 576528 5374.89 520 509 107.2
A 15 222 236748 2204.37 520 509 107.2
B 5 255 73099 723.01 523 511 100.4
B 0 229 62015 612.61 523 511 100.4
B 15 85 36531 358.78 523 511 100.4
C 15 214 219519 1846.55 507 509 118.6
C 14 254 99296 832.91 507 509 118.6
C 0 239 20008 164.4 507 509 118.6
D 1 52 2894561 26838.85 442 428 107.8
D 12 16 675768 6262.79 442 428 107.8
D 12 233 447512 4146.05 442 428 107.8

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