ASTROSAT CZTI

Data Quality Report

Orbit 20190516_A05_101T08_9000002922_level2

Creation date: 2025-11-30T06:20:51.068975
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_101T08_9000002922cztM0_level2.fits modeM0/AS1A05_101T08_9000002922cztM0_level2_quad_clean.evt
Size (bytes)335,108,160176,169,600
Size319.6 MB 168.0 MB
Events in quadrant A2,092,446820,807
Events in quadrant B1,993,062818,803
Events in quadrant C2,071,750791,101
Events in quadrant D1,733,432644,000

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680660
B0739090
C0686880
D01089480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06700
B06700
C06700
D06700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328532090.636167%
B328535401.643686%
C328533441.047089%
D3285330119.165069%

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 40269 32851 0 0 0.00% 0.00%
B 40269 32852 0 0 0.00% 0.00%
C 40269 32853 0 0 0.00% 0.00%
D 40269 32844 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 1926 10.5 545 513 134.5
A 7 110 1620 8.23 545 513 134.5
A 9 19 1522 7.5 545 513 134.5
B 2 9 1690 11.46 526 504 103.5
B 2 8 1411 8.76 526 504 103.5
B 5 225 1284 7.54 526 504 103.5
C 1 80 1575 7.61 547 517 139.1
C 1 81 1568 7.56 547 517 139.1
C 12 241 1387 6.26 547 517 139.1
D 6 231 1266 6.28 495 454 129.3
D 10 189 1263 6.26 495 454 129.3
D 15 46 1259 6.22 495 454 129.3

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