ASTROSAT CZTI

Data Quality Report

Orbit 50685

Creation date: 2025-02-10T10:04:49.821828
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/AS1T05_241T01_9000006446_50685cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50685cztM0_level2_quad_clean.evt
Size (bytes)616,668,480102,562,560
Size588.1 MB 97.8 MB
Events in quadrant A5,977,873622,155
Events in quadrant B5,403,604727,689
Events in quadrant C5,780,727629,468
Events in quadrant D5,094,282613,453

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228362
B0211612
C0223242
D0206482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A736376110.335461%
B73633574.848567%
C73636578.922993%
D73633434.658427%

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 7853 7363 494 494 6.29% 6.71%
B 7853 7363 132 132 1.68% 1.79%
C 7853 7363 462 462 5.88% 6.27%
D 7853 7364 283 283 3.60% 3.84%

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 12 80 2033687 10694.55 759 740 190.1
A 4 3 184665 967.56 759 740 190.1
A 9 191 136428 713.8 759 740 190.1
B 4 170 1042926 6355.19 771 741 164.0
B 0 229 533959 3251.53 771 741 164.0
B 10 247 302442 1839.76 771 741 164.0
C 4 5 501383 2458.07 742 736 203.7
C 13 113 498826 2445.52 742 736 203.7
C 14 254 386979 1896.37 742 736 203.7
D 7 96 415151 2003.2 747 719 206.9
D 7 110 383546 1850.43 747 719 206.9
D 3 12 203753 981.38 747 719 206.9

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