ASTROSAT CZTI

Data Quality Report

Orbit 30012

Creation date: 2024-06-27T20:09:53.199473
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_071T02_9000004312_30012cztM0_level2.evt modeM0/AS1A10_071T02_9000004312_30012cztM0_level2_quad_clean.evt
Size (bytes)631,229,760110,799,360
Size602.0 MB 105.7 MB
Events in quadrant A4,080,043720,081
Events in quadrant B6,321,490709,112
Events in quadrant C4,069,492688,078
Events in quadrant D4,109,672688,183

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171183
B0250123
C0170323
D0173343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79103264.121365%
B79105526.978508%
C79114065.132095%
D79112883.640501%

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 8240 7914 1 1 0.01% 0.01%
B 8240 7914 25 25 0.30% 0.32%
C 8241 7915 2 2 0.02% 0.03%
D 8241 7915 29 29 0.35% 0.37%

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 12 96 42102 195.62 1030 1006 210.1
A 5 203 36838 170.56 1030 1006 210.1
A 8 192 18239 82.03 1030 1006 210.1
B 6 159 2081952 10499.46 999 969 198.2
B 6 36 253376 1273.5 999 969 198.2
B 12 111 24945 120.97 999 969 198.2
C 14 238 155271 662.16 981 989 233.0
C 3 233 63550 268.51 981 989 233.0
C 2 114 18542 75.34 981 989 233.0
D 8 195 158195 647.98 1005 980 242.6
D 13 138 80001 325.69 1005 980 242.6
D 2 234 33746 135.05 1005 980 242.6

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