ASTROSAT CZTI

Data Quality Report

Orbit 42624

Creation date: 2024-06-27T22:42:21.932936
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/AS1A05_174T01_9000005820_42624cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42624cztM0_level2_quad_clean.evt
Size (bytes)394,577,280103,245,120
Size376.3 MB 98.5 MB
Events in quadrant A3,538,538690,842
Events in quadrant B2,967,959704,720
Events in quadrant C3,048,318683,655
Events in quadrant D4,551,713598,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143732
B0132642
C0131082
D0180032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417360.561010%
B6418250.389529%
C6418170.264880%
D64184717.338735%

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 9282 6419 14 14 0.15% 0.22%
B 9283 6420 13 13 0.14% 0.20%
C 9283 6420 10 10 0.11% 0.16%
D 9283 6420 429 429 4.62% 6.68%

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 630749 4327.01 703 687 145.6
A 2 79 164933 1127.98 703 687 145.6
A 13 248 13449 87.64 703 687 145.6
B 10 246 83788 607.08 698 677 136.9
B 7 202 52951 381.83 698 677 136.9
B 5 255 43303 311.36 698 677 136.9
C 15 214 266265 1651.72 690 692 160.8
C 14 254 78451 483.62 690 692 160.8
C 3 233 6531 36.32 690 692 160.8
D 13 249 748114 4511.28 665 645 165.7
D 12 6 469275 2828.38 665 645 165.7
D 2 249 351284 2116.25 665 645 165.7

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