ASTROSAT CZTI

Data Quality Report

Orbit 16706

Creation date: 2024-06-27T17:26:30.037556
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_024T01_9000002472_16706cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16706cztM0_level2_quad_clean.evt
Size (bytes)852,168,96097,657,920
Size812.7 MB 93.1 MB
Events in quadrant A4,162,323700,401
Events in quadrant B3,578,534714,915
Events in quadrant C3,758,047687,712
Events in quadrant D13,873,570402,968

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165582
B0146321
C0151911
D0456731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64474216.530169%
B6447961.489065%
C64471742.698930%
D6447446369.225997%

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 7263 6450 246 246 3.39% 3.81%
B 7263 6450 9 9 0.12% 0.14%
C 7263 6450 41 41 0.56% 0.64%
D 7263 6450 3810 3810 52.46% 59.07%

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 15 174 1019604 6258.96 799 784 162.8
A 4 2 22173 131.4 799 784 162.8
A 15 190 13450 77.81 799 784 162.8
B 15 35 171646 1089.05 822 802 156.9
B 5 236 55983 351.75 822 802 156.9
B 0 246 34398 214.16 822 802 156.9
C 0 207 356713 1928.29 790 799 184.6
C 3 233 191842 1035.04 790 799 184.6
C 14 238 123838 666.61 790 799 184.6
D 2 16 9880861 72192.08 552 537 136.9
D 1 52 1754563 12816.06 552 537 136.9
D 5 222 39860 287.32 552 537 136.9

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