ASTROSAT CZTI

Data Quality Report

Orbit 22048

Creation date: 2024-06-27T18:35:49.187000
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/AS1A07_047T08_9000003262_22048cztM0_level2.evt modeM0/AS1A07_047T08_9000003262_22048cztM0_level2_quad_clean.evt
Size (bytes)501,367,680135,915,840
Size478.1 MB 129.6 MB
Events in quadrant A3,272,527923,551
Events in quadrant B3,473,385937,923
Events in quadrant C3,272,446901,182
Events in quadrant D4,690,468866,509

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143582
B0148382
C0143542
D0187894

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6999400.571510%
B7000550.785714%
C7000420.600000%
D69992673.814831%

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 7634 6999 4 4 0.05% 0.06%
B 7635 7001 15 15 0.20% 0.21%
C 7635 7001 0 0 0.00% 0.00%
D 7634 7000 240 240 3.14% 3.43%

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 15 236 22215 125.95 840 824 169.8
A 13 254 11157 60.84 840 824 169.8
A 5 16 8110 42.9 840 824 169.8
B 3 64 64146 403.05 837 817 157.1
B 0 197 35966 223.7 837 817 157.1
B 0 190 28876 178.58 837 817 157.1
C 14 238 126590 677.39 803 808 185.7
C 3 233 8676 42.37 803 808 185.7
C 4 175 6349 29.84 803 808 185.7
D 11 176 430019 2214.63 805 782 193.8
D 5 222 288591 1484.94 805 782 193.8
D 7 38 227810 1171.34 805 782 193.8

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