ASTROSAT CZTI

Data Quality Report

Orbit 24622

Creation date: 2024-06-27T19:08:01.369905
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/AS1T03_189T01_9000003614_24622cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24622cztM0_level2_quad_clean.evt
Size (bytes)451,154,880110,551,680
Size430.3 MB 105.4 MB
Events in quadrant A3,065,432757,946
Events in quadrant B3,211,729758,494
Events in quadrant C3,755,772719,810
Events in quadrant D3,247,435717,876

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126011
B0129871
C0148901
D0134321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56391282.269906%
B56391713.032453%
C56392374.202873%
D56391132.003901%

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 6944 5639 0 0 0.00% 0.00%
B 6944 5639 15 15 0.22% 0.27%
C 6944 5639 41 41 0.59% 0.73%
D 6944 5639 1 1 0.01% 0.02%

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 13 254 7868 45.41 794 783 156.0
A 0 226 6863 38.97 794 783 156.0
A 3 137 6773 38.4 794 783 156.0
B 3 64 110712 767.39 771 753 143.3
B 0 190 61077 420.99 771 753 143.3
B 12 111 16898 112.67 771 753 143.3
C 7 247 608180 3458.36 763 770 175.6
C 14 238 122485 693.0 763 770 175.6
C 10 91 26347 145.63 763 770 175.6
D 1 52 236481 1272.18 779 759 185.3
D 8 195 71280 380.6 779 759 185.3
D 2 234 23354 121.94 779 759 185.3

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