ASTROSAT CZTI

Data Quality Report

Orbit 20170226_G06_114T01_9000001056_level2

Creation date: 2025-11-09T19:34:20.144864
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/AS1G06_114T01_9000001056cztM0_level2.fits modeM0/AS1G06_114T01_9000001056cztM0_level2_quad_clean.evt
Size (bytes)388,451,520353,868,480
Size370.5 MB 337.5 MB
Events in quadrant A2,351,1682,052,400
Events in quadrant B2,256,2562,049,202
Events in quadrant C2,315,3381,965,979
Events in quadrant D1,974,4441,781,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08540
B08540
C08540
D08540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0856360
B0892090
C0873780
D01009830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A417423760.900771%
B417426101.461358%
C417422740.656413%
D4174213853.318001%

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 47421 41741 0 0 0.00% 0.00%
B 47422 41741 0 0 0.00% 0.00%
C 47422 41742 0 0 0.00% 0.00%
D 47422 41740 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 14 188 2340 11.35 609 566 156.4
A 0 29 2323 11.24 609 566 156.4
A 14 204 2076 9.66 609 566 156.4
B 2 9 1981 11.59 595 563 122.4
B 3 17 1592 8.41 595 563 122.4
B 14 254 1562 8.16 595 563 122.4
C 12 241 1664 6.71 613 566 163.6
C 2 191 1557 6.06 613 566 163.6
C 9 188 1519 5.83 613 566 163.6
D 7 3 1475 6.28 565 513 153.1
D 6 231 1444 6.08 565 513 153.1
D 10 189 1422 5.94 565 513 153.1

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