ASTROSAT CZTI

Data Quality Report

Orbit 31416

Creation date: 2024-06-27T20:27:57.569712
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/AS1T04_026T01_9000004556_31416cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31416cztM0_level2_quad_clean.evt
Size (bytes)321,762,24057,502,080
Size306.9 MB 54.8 MB
Events in quadrant A1,792,011377,145
Events in quadrant B2,878,061377,144
Events in quadrant C2,421,952355,017
Events in quadrant D2,387,558357,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078620
B0116890
C096440
D095430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A388920.051427%
B3889190.488557%
C38891433.677038%
D3890290.745501%

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 3889 3889 0 0 0.00% 0.00%
B 3889 3889 0 0 0.00% 0.00%
C 3889 3889 92 92 2.37% 2.37%
D 3890 3890 16 16 0.41% 0.41%

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 13 254 6160 60.92 464 455 93.6
A 3 137 4957 48.08 464 455 93.6
A 0 226 3822 35.96 464 455 93.6
B 6 159 1023368 11533.54 455 443 88.7
B 0 190 39781 443.54 455 443 88.7
B 12 111 10969 118.68 455 443 88.7
C 3 233 315991 2983.97 442 445 105.7
C 10 22 297844 2812.36 442 445 105.7
C 14 238 73461 690.48 442 445 105.7
D 8 195 586798 5342.93 453 441 109.7
D 2 250 48951 442.03 453 441 109.7
D 12 218 37911 341.43 453 441 109.7

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