ASTROSAT CZTI

Data Quality Report

Orbit 20190819_A05_104T04_9000003108_level2

Creation date: 2025-12-03T04:45:14.142805
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_104T04_9000003108cztM0_level2.fits modeM0/AS1A05_104T04_9000003108cztM0_level2_quad_clean.evt
Size (bytes)333,696,960200,249,280
Size318.2 MB 191.0 MB
Events in quadrant A2,076,460989,384
Events in quadrant B2,007,5641,003,550
Events in quadrant C2,028,088957,520
Events in quadrant D1,764,788881,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0675720
B0696920
C0680590
D0708130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06600
B06600
C06600
D06600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324561740.536110%
B324562780.856544%
C324564081.257087%
D324563291.013680%

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 39801 32456 0 0 0.00% 0.00%
B 39801 32456 0 0 0.00% 0.00%
C 39801 32456 0 0 0.00% 0.00%
D 39801 32456 0 0 0.00% 0.00%

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 0 29 1960 10.84 540 510 133.8
A 7 110 1637 8.42 540 510 133.8
A 0 30 1560 7.85 540 510 133.8
B 2 9 1581 10.04 530 506 107.1
B 5 128 1372 8.09 530 506 107.1
B 2 8 1345 7.84 530 506 107.1
C 1 81 1550 7.59 534 501 138.1
C 1 80 1536 7.49 534 501 138.1
C 3 234 1361 6.23 534 501 138.1
D 7 3 1275 6.02 504 459 135.4
D 6 67 1261 5.92 504 459 135.4
D 15 46 1259 5.91 504 459 135.4

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