ASTROSAT CZTI

Data Quality Report

Orbit 51696

Creation date: 2025-04-22T12:01:13.137195
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/AS1A13_031T01_9000006462_51696cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51696cztM0_level2_quad_clean.evt
Size (bytes)469,808,64098,697,600
Size448.0 MB 94.1 MB
Events in quadrant A3,636,680647,418
Events in quadrant B3,689,615697,284
Events in quadrant C5,921,461576,960
Events in quadrant D3,606,902586,384

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156742
B0159572
C0225233
D0158742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6896781.131090%
B68971932.798318%
C689683312.079466%
D68961472.131671%

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 8876 6898 15 15 0.17% 0.22%
B 8877 6899 80 80 0.90% 1.16%
C 8876 6898 663 663 7.47% 9.61%
D 8876 6898 104 104 1.17% 1.51%

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 3 14 473447 2660.6 719 700 177.7
A 5 240 102116 570.77 719 700 177.7
A 4 3 72489 404.03 719 700 177.7
B 10 41 206055 1339.88 714 689 153.3
B 1 223 185787 1207.65 714 689 153.3
B 8 128 163161 1060.03 714 689 153.3
C 15 189 1442524 7740.59 673 668 186.3
C 0 192 830196 4453.31 673 668 186.3
C 15 231 316572 1695.93 673 668 186.3
D 8 176 181002 936.61 687 660 192.5
D 6 228 154381 798.36 687 660 192.5
D 15 171 134075 692.9 687 660 192.5

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