ASTROSAT CZTI

Data Quality Report

Orbit 13599

Creation date: 2024-06-27T16:43:15.995829
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/AS1G08_028T01_9000002006_13599cztM0_level2.evt modeM0/AS1G08_028T01_9000002006_13599cztM0_level2_quad_clean.evt
Size (bytes)1,194,776,640167,146,560
Size1.1 GB 159.4 MB
Events in quadrant A5,904,1211,082,727
Events in quadrant B6,848,5731,074,837
Events in quadrant C6,145,8081,077,875
Events in quadrant D16,437,948958,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257093
B0287062
C0260482
D0575612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12565370.294469%
B125651641.305213%
C12565480.382014%
D12565343327.321926%

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 13956 12568 3 3 0.02% 0.02%
B 13956 12568 31 31 0.22% 0.25%
C 13956 12568 15 15 0.11% 0.12%
D 13956 12568 3410 3410 24.43% 27.13%

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 69 30772 94.89 1511 1484 308.7
A 1 162 29679 91.35 1511 1484 308.7
A 0 226 13764 39.79 1511 1484 308.7
B 0 219 323796 1121.04 1508 1471 287.5
B 0 182 232454 803.35 1508 1471 287.5
B 3 64 120806 415.04 1508 1471 287.5
C 3 233 350628 1026.42 1466 1477 340.2
C 7 254 21416 58.62 1466 1477 340.2
C 7 237 19574 53.2 1466 1477 340.2
D 13 122 8673959 27127.33 1304 1270 319.7
D 5 222 2493405 7795.16 1304 1270 319.7
D 8 195 104774 323.75 1304 1270 319.7

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