ASTROSAT CZTI

Data Quality Report

Orbit 28813

Creation date: 2024-06-27T19:56:42.185628
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_121T01_9000004134_28813cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28813cztM0_level2_quad_clean.evt
Size (bytes)1,376,579,520186,713,280
Size1.3 GB 178.1 MB
Events in quadrant A6,291,3891,265,905
Events in quadrant B6,412,5841,286,160
Events in quadrant C8,248,9931,206,443
Events in quadrant D19,872,7351,008,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270743
B0271552
C0331132
D0680472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128271471.146020%
B128281551.208294%
C128286054.716246%
D12828440734.354537%

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 14042 12827 20 20 0.14% 0.16%
B 14043 12828 16 16 0.11% 0.12%
C 14043 12828 39 39 0.28% 0.30%
D 14042 12827 4275 4275 30.44% 33.33%

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 15 174 239469 771.13 1535 1501 308.6
A 14 235 62357 197.2 1535 1501 308.6
A 4 2 29630 91.15 1535 1501 308.6
B 5 172 103514 352.63 1528 1488 289.3
B 0 229 70607 238.89 1528 1488 289.3
B 10 245 68928 233.09 1528 1488 289.3
C 3 233 2014123 5964.73 1451 1459 337.4
C 14 238 306058 902.71 1451 1459 337.4
C 0 207 140037 410.69 1451 1459 337.4
D 8 195 7783682 25008.58 1302 1265 311.2
D 1 52 4660275 14971.6 1302 1265 311.2
D 13 104 1519492 4878.78 1302 1265 311.2

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