ASTROSAT CZTI

Data Quality Report

Orbit 21642

Creation date: 2024-06-27T18:30:34.705170
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/AS1A06_002T02_9000003206_21642cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21642cztM0_level2_quad_clean.evt
Size (bytes)463,645,44074,473,920
Size442.2 MB 71.0 MB
Events in quadrant A3,284,231454,393
Events in quadrant B3,556,712463,396
Events in quadrant C3,322,139437,102
Events in quadrant D3,417,226427,120

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139782
B0145632
C0140522
D0145522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6786981.444150%
B67851301.915991%
C67851171.724392%
D6785630.928519%

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 7666 6787 0 0 0.00% 0.00%
B 7665 6786 4 4 0.05% 0.06%
C 7665 6786 1 1 0.01% 0.01%
D 7665 6786 14 14 0.18% 0.21%

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 10192 54.96 851 835 170.3
A 0 226 7485 39.06 851 835 170.3
A 3 137 7122 36.93 851 835 170.3
B 0 229 69380 418.09 853 831 164.0
B 3 64 42408 253.58 853 831 164.0
B 0 219 36276 216.18 853 831 164.0
C 14 238 126707 657.91 816 818 191.3
C 10 22 8034 37.71 816 818 191.3
C 13 61 5870 26.4 816 818 191.3
D 1 52 184306 906.27 825 802 202.5
D 2 136 59144 288.13 825 802 202.5
D 13 153 30376 146.06 825 802 202.5

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