ASTROSAT CZTI

Data Quality Report

Orbit 35477

Creation date: 2022-04-21T04:58:24.794106
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_095T01_9000005080_35477cztM0_level2.evt modeM0/AS1T04_095T01_9000005080_35477cztM0_level2_quad_clean.evt
Size (bytes)704,416,32095,852,160
Size671.8 MB 91.4 MB
Events in quadrant A2,631,931744,799
Events in quadrant B3,509,987744,211
Events in quadrant C11,761,165356,490
Events in quadrant D3,077,377690,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110573
B0137592
C0385572
D0125102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5219140.268251%
B52192294.387814%
C5219389274.573673%
D52191011.935237%

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 7102 5220 3 3 0.04% 0.06%
B 7102 5220 152 152 2.14% 2.91%
C 7102 5220 3348 3348 47.14% 64.14%
D 7102 5220 89 89 1.25% 1.70%

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 129639 1019.09 639 628 126.6
A 13 6 10199 75.6 639 628 126.6
A 7 16 9296 68.47 639 628 126.6
B 5 236 523610 4415.74 631 614 118.4
B 5 200 287561 2422.74 631 614 118.4
B 5 172 138344 1162.88 631 614 118.4
C 4 254 10036823 127438.21 346 348 78.8
C 0 10 160581 2034.55 346 348 78.8
C 15 214 123720 1566.51 346 348 78.8
D 12 233 136353 929.41 612 597 146.1
D 1 52 117560 800.75 612 597 146.1
D 2 153 93970 639.25 612 597 146.1

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