ASTROSAT CZTI

Data Quality Report

Orbit 39331

Creation date: 2024-06-27T22:03:19.330234
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_061T07_9000005468_39331cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39331cztM0_level2_quad_clean.evt
Size (bytes)381,389,76095,633,280
Size363.7 MB 91.2 MB
Events in quadrant A3,212,252648,719
Events in quadrant B3,163,842662,255
Events in quadrant C2,822,574649,611
Events in quadrant D4,532,665586,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125203
B0122942
C0111712
D0170632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4975771.547739%
B49752334.683417%
C4975280.562814%
D49751052.110553%

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 7098 4976 52 52 0.73% 1.05%
B 7098 4976 163 163 2.30% 3.28%
C 7098 4976 10 10 0.14% 0.20%
D 7098 4976 118 118 1.66% 2.37%

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 13 248 426004 3491.66 611 600 121.8
A 10 83 402439 3298.24 611 600 121.8
A 15 223 15614 123.23 611 600 121.8
B 5 255 596554 5217.05 606 591 114.2
B 5 172 182166 1589.5 606 591 114.2
B 12 111 14264 119.69 606 591 114.2
C 15 214 230100 1625.58 612 618 141.2
C 9 187 101844 717.05 612 618 141.2
C 14 254 74006 519.86 612 618 141.2
D 12 235 1914379 13224.37 601 585 144.7
D 2 16 138377 952.15 601 585 144.7
D 13 249 67810 464.53 601 585 144.7

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