ASTROSAT CZTI

Data Quality Report

Orbit 16650

Creation date: 2024-06-27T17:25:32.345315
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_002T10_9000002460_16650cztM0_level2.evt modeM0/AS1A05_002T10_9000002460_16650cztM0_level2_quad_clean.evt
Size (bytes)585,979,200126,406,080
Size558.8 MB 120.6 MB
Events in quadrant A4,746,750816,168
Events in quadrant B4,096,802848,021
Events in quadrant C3,941,422804,790
Events in quadrant D4,399,939784,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196853
B0177482
C0170462
D0188622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82822653.199710%
B8282760.917653%
C8282981.183289%
D82821061.279884%

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 8848 8286 195 195 2.20% 2.35%
B 8848 8286 7 7 0.08% 0.08%
C 8848 8286 0 0 0.00% 0.00%
D 8848 8286 41 41 0.46% 0.49%

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 9 143 879502 4577.86 961 941 191.9
A 12 96 161913 838.77 961 941 191.9
A 15 223 10975 52.28 961 941 191.9
B 15 35 126975 669.42 979 951 188.3
B 0 198 44063 229.0 979 951 188.3
B 12 111 21805 110.77 979 951 188.3
C 14 238 143265 651.43 937 943 218.5
C 3 233 128458 583.65 937 943 218.5
C 14 67 11329 47.54 937 943 218.5
D 1 52 627805 2745.96 941 911 228.3
D 5 222 66727 288.29 941 911 228.3
D 10 70 61914 267.21 941 911 228.3

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