ASTROSAT CZTI

Data Quality Report

Orbit 30221

Creation date: 2024-06-27T20:13:17.751119
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/AS1A10_071T16_9000004348_30221cztM0_level2.evt modeM0/AS1A10_071T16_9000004348_30221cztM0_level2_quad_clean.evt
Size (bytes)608,860,80095,385,600
Size580.7 MB 91.0 MB
Events in quadrant A3,233,683626,809
Events in quadrant B5,022,074634,234
Events in quadrant C3,288,456608,201
Events in quadrant D6,455,811566,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138592
B0196952
C0139312
D0236602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497721.108204%
B64971091.677697%
C64971111.708481%
D649774511.466831%

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 7647 6497 3 3 0.04% 0.05%
B 7647 6497 1 1 0.01% 0.02%
C 7647 6497 0 0 0.00% 0.00%
D 7647 6497 696 696 9.10% 10.71%

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 8 192 25036 145.94 831 816 166.0
A 13 254 11581 64.86 831 816 166.0
A 3 137 8442 45.95 831 816 166.0
B 6 159 1765532 11285.37 823 805 156.4
B 12 111 19232 117.84 823 805 156.4
B 11 111 17795 108.65 823 805 156.4
C 14 238 131292 693.52 802 809 188.1
C 2 114 15220 76.59 802 809 188.1
C 15 208 13208 65.9 802 809 188.1
D 1 52 2378173 12606.97 773 756 188.6
D 12 227 501119 2653.32 773 756 188.6
D 8 195 291449 1541.49 773 756 188.6

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