ASTROSAT CZTI

Data Quality Report

Orbit 23482

Creation date: 2024-06-27T18:55:00.228433
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_148T02_9000003474_23482cztM0_level2.evt modeM0/AS1A07_148T02_9000003474_23482cztM0_level2_quad_clean.evt
Size (bytes)579,421,44081,253,440
Size552.6 MB 77.5 MB
Events in quadrant A3,911,916485,138
Events in quadrant B4,213,558488,319
Events in quadrant C4,234,599472,580
Events in quadrant D4,655,286468,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165333
B0175092
C0174282
D0189732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78432272.894301%
B78432753.506311%
C78433314.220324%
D78433194.067321%

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 8033 7843 0 0 0.00% 0.00%
B 8033 7843 9 9 0.11% 0.11%
C 8033 7843 27 27 0.34% 0.34%
D 8033 7843 154 154 1.92% 1.96%

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 4 2 20039 93.2 1004 980 204.5
A 12 96 18174 84.08 1004 980 204.5
A 13 254 13342 60.45 1004 980 204.5
B 0 189 253438 1320.33 988 962 191.2
B 15 32 35398 180.08 988 962 191.2
B 0 230 32438 164.6 988 962 191.2
C 2 16 182123 789.43 960 966 229.5
C 14 238 150540 651.8 960 966 229.5
C 7 247 125554 542.92 960 966 229.5
D 1 52 597403 2486.33 980 955 239.9
D 12 233 218606 907.29 980 955 239.9
D 13 104 47421 193.7 980 955 239.9

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