ASTROSAT CZTI

Data Quality Report

Orbit 20190203_A05_186T01_9000002692_level2

Creation date: 2025-11-26T23:16:19.983914
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/AS1A05_186T01_9000002692cztM0_level2.fits modeM0/AS1A05_186T01_9000002692cztM0_level2_quad_clean.evt
Size (bytes)494,562,240400,769,280
Size471.7 MB 382.2 MB
Events in quadrant A3,125,5462,341,493
Events in quadrant B2,975,9062,342,306
Events in quadrant C2,959,7442,182,681
Events in quadrant D2,508,3401,860,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010140
B010140
C010140
D010140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01039610
B01066220
C01035370
D01418960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496523860.777411%
B496525311.069443%
C496525501.107710%
D4965230586.158866%

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 57712 49652 0 0 0.00% 0.00%
B 57712 49652 0 0 0.00% 0.00%
C 57712 49650 0 0 0.00% 0.00%
D 57712 49422 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 3035 11.44 812 764 198.5
A 7 110 2506 8.78 812 764 198.5
A 0 30 2427 8.38 812 764 198.5
B 2 9 2394 10.41 788 753 157.7
B 2 8 1991 7.85 788 753 157.7
B 5 128 1952 7.6 788 753 157.7
C 12 241 2020 6.43 783 731 200.4
C 9 233 1985 6.26 783 731 200.4
C 3 126 1979 6.23 783 731 200.4
D 10 190 1859 6.43 714 651 187.8
D 3 14 1809 6.17 714 651 187.8
D 6 67 1785 6.04 714 651 187.8

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