ASTROSAT CZTI

Data Quality Report

Orbit 20160129_G02_021T08_9000000302_level2

Creation date: 2025-10-27T10:42:36.762127
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/AS1G02_021T08_9000000302cztM0_level2.fits modeM0/AS1G02_021T08_9000000302cztM0_level2_quad_clean.evt
Size (bytes)441,144,000456,779,520
Size420.7 MB 435.6 MB
Events in quadrant A2,545,8162,651,249
Events in quadrant B2,500,0762,642,986
Events in quadrant C2,518,8122,560,099
Events in quadrant D2,178,8162,363,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139742729005096139741055942702
B1139742729005096139741055942702
C1139742729005096139741055942702
D1139742729005096139741055942702

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02259050
B02599830
C02195340
D02145400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010580
B010580
C010570
D010580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526943440.652826%
B5269012192.313532%
C526923020.573142%
D526926681.267745%

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 59451 52694 0 0 0.00% 0.00%
B 59451 52693 0 0 0.00% 0.00%
C 59451 52694 0 0 0.00% 0.00%
D 59451 52691 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 2340 11.0 661 615 156.8
A 7 110 2301 10.75 661 615 156.8
A 0 30 1829 7.74 661 615 156.8
B 2 9 1931 10.66 660 626 122.4
B 10 225 1626 8.17 660 626 122.4
B 14 254 1602 7.97 660 626 122.4
C 12 241 1772 7.13 664 612 162.8
C 9 242 1673 6.52 664 612 162.8
C 3 235 1598 6.06 664 612 162.8
D 1 19 1603 7.06 621 568 146.6
D 11 82 1539 6.62 621 568 146.6
D 6 231 1537 6.61 621 568 146.6

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