ASTROSAT CZTI

Data Quality Report

Orbit 23260

Creation date: 2024-06-27T18:51:59.121684
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/AS1A08_004T03_9000003438_23260cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23260cztM0_level2_quad_clean.evt
Size (bytes)483,713,280107,559,360
Size461.3 MB 102.6 MB
Events in quadrant A3,408,161723,388
Events in quadrant B3,464,092731,849
Events in quadrant C3,615,824676,178
Events in quadrant D3,716,196669,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141502
B0142532
C0147432
D0152412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6553751.144514%
B6553951.449718%
C65531191.815962%
D6553881.342896%

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 7853 6553 0 0 0.00% 0.00%
B 7853 6553 1 1 0.01% 0.02%
C 7853 6554 10 10 0.13% 0.15%
D 7853 6554 32 32 0.41% 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 13 254 10298 53.92 882 864 175.0
A 0 226 7733 39.26 882 864 175.0
A 3 137 7037 35.28 882 864 175.0
B 12 111 18614 109.45 873 855 162.3
B 11 111 16321 95.32 873 855 162.3
B 14 111 13835 80.0 873 855 162.3
C 10 9 175709 914.71 828 835 191.2
C 14 238 133878 695.91 828 835 191.2
C 2 16 42966 220.37 828 835 191.2
D 2 152 161938 777.2 851 829 207.3
D 12 233 132528 635.33 851 829 207.3
D 7 238 55323 262.88 851 829 207.3

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