ASTROSAT CZTI

Data Quality Report

Orbit 38769

Creation date: 2024-06-27T21:56:11.403397
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_051T01_9000005394_38769cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38769cztM0_level2_quad_clean.evt
Size (bytes)368,472,96087,992,640
Size351.4 MB 83.9 MB
Events in quadrant A2,951,832606,168
Events in quadrant B2,389,602630,734
Events in quadrant C3,554,986576,680
Events in quadrant D4,322,476472,548

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120083
B0108212
C0138482
D0165802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5399350.648268%
B539940.074088%
C53992745.075014%
D539980114.836081%

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 9313 5401 30 30 0.32% 0.56%
B 9313 5401 0 0 0.00% 0.00%
C 9313 5401 242 242 2.60% 4.48%
D 9313 5401 750 750 8.05% 13.89%

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 395398 3201.14 602 590 123.3
A 13 248 220978 1786.93 602 590 123.3
A 13 254 8028 60.31 602 590 123.3
B 12 111 15158 124.21 603 588 117.3
B 11 111 13874 113.26 603 588 117.3
B 14 111 13429 109.47 603 588 117.3
C 14 254 628784 4660.62 578 582 134.8
C 0 239 390699 2894.27 578 582 134.8
C 15 214 236886 1753.14 578 582 134.8
D 2 16 1988180 15405.01 527 510 129.0
D 14 52 64189 493.53 527 510 129.0
D 12 128 50829 389.98 527 510 129.0

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