ASTROSAT CZTI

Data Quality Report

Orbit 39317

Creation date: 2024-06-27T22:03:09.591373
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_061T07_9000005468_39317cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39317cztM0_level2_quad_clean.evt
Size (bytes)1,224,501,120235,702,080
Size1.1 GB 224.8 MB
Events in quadrant A7,563,9001,718,946
Events in quadrant B6,591,2081,792,902
Events in quadrant C7,381,4611,684,001
Events in quadrant D22,754,2291,015,558

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299085
B0274184
C0293154
D0769884

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13404630.470009%
B13404240.179051%
C13404670.499851%
D13404540440.316323%

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 19562 13407 35 35 0.18% 0.26%
B 19562 13407 3 3 0.02% 0.02%
C 19562 13407 40 40 0.20% 0.30%
D 19562 13407 4713 4713 24.09% 35.15%

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 937754 2894.07 1631 1607 323.5
A 13 248 219101 672.37 1631 1607 323.5
A 15 222 101320 308.26 1631 1607 323.5
B 5 255 64385 206.06 1632 1591 304.7
B 5 172 59684 190.63 1632 1591 304.7
B 0 230 39766 125.27 1632 1591 304.7
C 15 214 602003 1629.35 1604 1617 368.5
C 9 187 332026 896.68 1604 1617 368.5
C 14 254 169467 455.52 1604 1617 368.5
D 12 235 16273643 50465.08 1349 1317 322.4
D 13 249 642196 1987.55 1349 1317 322.4
D 12 227 340107 1050.68 1349 1317 322.4

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