ASTROSAT CZTI

Data Quality Report

Orbit 20160818_G05_142T01_9000000610_level2

Creation date: 2025-11-04T21:50:53.390427
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/AS1G05_142T01_9000000610cztM0_level2.fits modeM0/AS1G05_142T01_9000000610cztM0_level2_quad_clean.evt
Size (bytes)394,416,000395,841,600
Size376.1 MB 377.5 MB
Events in quadrant A2,353,0182,293,971
Events in quadrant B2,291,4902,328,884
Events in quadrant C2,346,1222,286,158
Events in quadrant D1,918,6662,046,049

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09000
B09080
C09000
D08980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970520
B01010920
C0948010
D01297450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4422012852.905925%
B4425012292.777401%
C442186901.560450%
D4404542389.621978%

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 49946 44374 0 0 0.00% 0.00%
B 49945 44428 0 0 0.00% 0.00%
C 49946 44423 0 0 0.00% 0.00%
D 49945 43712 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 2229 10.36 611 566 160.5
A 7 110 2077 9.42 611 566 160.5
A 0 30 1790 7.63 611 566 160.5
B 2 9 2005 11.53 602 569 124.6
B 12 226 1675 8.88 602 569 124.6
B 14 254 1621 8.44 602 569 124.6
C 1 80 1713 6.81 619 567 168.3
C 1 81 1685 6.64 619 567 168.3
C 12 241 1655 6.47 619 567 168.3
D 11 82 1630 7.56 546 494 150.2
D 1 3 1441 6.3 546 494 150.2
D 3 14 1439 6.29 546 494 150.2

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