ASTROSAT CZTI

Data Quality Report

Orbit 41794

Creation date: 2024-06-27T22:32:53.480939
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/AS1A12_052T04_9000005700_41794cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41794cztM0_level2_quad_clean.evt
Size (bytes)323,179,20093,179,520
Size308.2 MB 88.9 MB
Events in quadrant A3,019,143641,046
Events in quadrant B2,504,204648,656
Events in quadrant C3,190,996592,275
Events in quadrant D2,843,973575,860

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120322
B0107062
C0125162
D0118572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5194200.385060%
B519480.154024%
C51932675.141537%
D5193831.598305%

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 7347 5195 3 3 0.04% 0.06%
B 7347 5195 1 1 0.01% 0.02%
C 7346 5194 260 260 3.54% 5.01%
D 7346 5194 83 83 1.13% 1.60%

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 559447 4535.59 609 598 123.2
A 15 223 64424 518.01 609 598 123.2
A 2 79 33863 269.98 609 598 123.2
B 0 245 46768 402.42 601 585 114.8
B 0 186 41189 353.8 601 585 114.8
B 0 183 31427 268.74 601 585 114.8
C 0 10 782998 5990.36 563 566 130.6
C 15 214 203594 1554.4 563 566 130.6
C 12 249 6403 44.69 563 566 130.6
D 13 249 233696 1618.62 590 573 144.0
D 12 79 102531 707.91 590 573 144.0
D 2 249 98509 679.99 590 573 144.0

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