ASTROSAT CZTI

Data Quality Report

Orbit 39065

Creation date: 2024-06-27T21:59:57.269215
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_077T06_9000005430_39065cztM0_level2.fits modeM0/AS1A12_077T06_9000005430_39065cztM0_level2_quad_clean.evt
Size (bytes)408,360,96088,027,200
Size389.4 MB 83.9 MB
Events in quadrant A3,711,370578,840
Events in quadrant B2,440,591617,118
Events in quadrant C3,416,489573,468
Events in quadrant D5,130,843520,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143652
B0108081
C0135721
D0190071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53682364.396423%
B536870.130402%
C53681242.309985%
D53682985.551416%

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 7011 5369 162 162 2.31% 3.02%
B 7011 5369 1 1 0.01% 0.02%
C 7011 5369 126 126 1.80% 2.35%
D 7011 5369 252 252 3.59% 4.69%

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 945652 7970.1 583 571 118.6
A 10 83 360767 3037.62 583 571 118.6
A 13 248 108191 907.59 583 571 118.6
B 0 230 57233 488.22 592 576 116.0
B 0 190 37580 318.87 592 576 116.0
B 12 111 14292 118.19 592 576 116.0
C 15 208 948284 7071.37 573 574 134.0
C 15 214 221894 1651.39 573 574 134.0
C 13 61 3837 24.35 573 574 134.0
D 12 235 2091936 15247.7 568 551 137.2
D 2 249 400752 2917.75 568 551 137.2
D 13 249 149976 1089.42 568 551 137.2

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