ASTROSAT CZTI

Data Quality Report

Orbit 14646

Creation date: 2024-06-27T16:57:56.855180
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/AS1A04_148T01_9000002162_14646cztM0_level2.evt modeM0/AS1A04_148T01_9000002162_14646cztM0_level2_quad_clean.evt
Size (bytes)570,559,68076,492,800
Size544.1 MB 72.9 MB
Events in quadrant A5,009,786459,327
Events in quadrant B3,540,845477,405
Events in quadrant C4,446,445468,693
Events in quadrant D3,843,103457,939

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190183
B0148052
C0177822
D0155932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64894737.289259%
B64891061.633534%
C64891061.633534%
D64892083.205425%

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 7710 6490 211 211 2.74% 3.25%
B 7710 6490 1 1 0.01% 0.02%
C 7710 6490 8 8 0.10% 0.12%
D 7710 6490 121 121 1.57% 1.86%

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 0 253 1379555 8198.65 845 830 168.2
A 8 15 105656 623.35 845 830 168.2
A 0 23 80571 474.18 845 830 168.2
B 0 189 36305 222.45 859 839 159.4
B 0 219 26844 163.11 859 839 159.4
B 4 142 25751 156.26 859 839 159.4
C 3 233 1162164 6127.21 835 838 189.5
C 0 207 27928 142.93 835 838 189.5
C 13 61 6171 28.14 835 838 189.5
D 15 0 238112 1082.48 833 815 219.2
D 10 199 122060 553.08 833 815 219.2
D 12 110 73826 333.05 833 815 219.2

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