ASTROSAT CZTI

Data Quality Report

Orbit 42505

Creation date: 2024-06-27T22:40:58.402591
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_9000005806_42505cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42505cztM0_level2_quad_clean.evt
Size (bytes)334,779,84082,497,600
Size319.3 MB 78.7 MB
Events in quadrant A2,821,791570,239
Events in quadrant B2,211,331569,347
Events in quadrant C2,353,378541,381
Events in quadrant D4,620,529470,342

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113702
B0100872
C0102022
D0171532

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945160.323559%
B4945100.202224%
C494560.121335%
D494549610.030334%

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 7068 4946 3 3 0.04% 0.06%
B 7068 4946 2 2 0.03% 0.04%
C 7068 4946 2 2 0.03% 0.04%
D 7068 4946 440 440 6.23% 8.90%

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 571919 5191.44 539 529 110.1
A 12 189 106372 961.65 539 529 110.1
A 13 248 45435 408.0 539 529 110.1
B 0 245 63378 624.61 527 514 100.6
B 0 229 24578 239.09 527 514 100.6
B 3 112 14604 139.99 527 514 100.6
C 15 214 222094 1830.16 518 520 121.1
C 9 54 87548 718.84 518 520 121.1
C 14 254 7773 59.91 518 520 121.1
D 12 233 1060389 8566.46 506 492 123.7
D 2 16 861692 6960.52 506 492 123.7
D 2 249 265663 2143.2 506 492 123.7

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