ASTROSAT CZTI

Data Quality Report

Orbit 35226

Creation date: 2022-04-04T06:49:52.389482
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/AS1C07_004T01_9000005052_35226cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35226cztM0_level2_quad_clean.evt
Size (bytes)725,509,44055,249,920
Size691.9 MB 52.7 MB
Events in quadrant A2,372,189372,131
Events in quadrant B7,427,782276,591
Events in quadrant C2,673,196372,381
Events in quadrant D9,158,724296,583

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103113
B0255542
C0109922
D0307082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A503960.119071%
B5039203540.384997%
C5039430.853344%
D5039203740.424687%

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 6352 5040 0 0 0.00% 0.00%
B 6352 5039 1417 1417 22.31% 28.12%
C 6352 5040 33 33 0.52% 0.65%
D 6352 5040 1962 1962 30.89% 38.93%

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 10 83 84061 707.63 586 575 118.0
A 13 6 10844 87.04 586 575 118.0
A 13 254 7973 62.71 586 575 118.0
B 5 236 3786965 40223.65 485 471 94.1
B 5 172 1599049 16981.57 485 471 94.1
B 4 232 29777 311.31 485 471 94.1
C 15 214 208396 1554.31 569 574 133.7
C 0 10 133219 992.06 569 574 133.7
C 1 23 55866 413.53 569 574 133.7
D 8 195 4154707 33505.59 502 487 124.0
D 1 47 1181540 9525.71 502 487 124.0
D 7 80 887620 7155.11 502 487 124.0

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