ASTROSAT CZTI

Data Quality Report

Orbit 26917

Creation date: 2024-06-27T19:34:56.733888
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/AS1T03_233T01_9000003894_26917cztM0_level2.evt modeM0/AS1T03_233T01_9000003894_26917cztM0_level2_quad_clean.evt
Size (bytes)1,390,392,000182,352,960
Size1.3 GB 173.9 MB
Events in quadrant A5,611,5321,394,170
Events in quadrant B20,247,574712,540
Events in quadrant C5,214,5751,386,322
Events in quadrant D10,284,6721,257,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237990
B0677410
C0227440
D0378410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110971060.955213%
B11097848876.489141%
C110971541.387762%
D11097152713.760476%

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 11531 11096 11 11 0.10% 0.10%
B 11531 11096 5977 5977 51.83% 53.87%
C 11532 11097 4 4 0.03% 0.04%
D 11531 11096 1450 1450 12.57% 13.07%

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 0 13 460358 1765.85 1304 1279 260.0
A 5 168 90969 344.99 1304 1279 260.0
A 8 192 25628 93.66 1304 1279 260.0
B 3 64 8832014 64885.29 727 710 136.1
B 0 189 8365013 61454.15 727 710 136.1
B 10 246 70990 516.36 727 710 136.1
C 14 238 203809 688.06 1267 1277 294.4
C 15 208 28401 92.15 1267 1277 294.4
C 2 16 27884 90.39 1267 1277 294.4
D 7 80 4178696 14428.7 1207 1172 289.5
D 1 52 1054349 3637.55 1207 1172 289.5
D 2 250 235979 811.0 1207 1172 289.5

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