ASTROSAT CZTI

Data Quality Report

Orbit 48492

Creation date: 2024-09-15T15:08:02.356818
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/AS1A13_081T01_9000006428_48492cztM0_level2.fits modeM0/AS1A13_081T01_9000006428_48492cztM0_level2_quad_clean.evt
Size (bytes)402,552,00094,927,680
Size383.9 MB 90.5 MB
Events in quadrant A6,164,768617,231
Events in quadrant B2,657,049651,673
Events in quadrant C2,491,790620,988
Events in quadrant D3,118,497563,084

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228281
B0124611
C0122821
D0138642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60352534.192212%
B60361151.905235%
C6036480.795229%
D60351071.772991%

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 6980 6035 5 5 0.07% 0.08%
B 6981 6036 4 4 0.06% 0.07%
C 6981 6036 0 0 0.00% 0.00%
D 6980 6035 41 41 0.59% 0.68%

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 3528298 26542.21 639 624 132.9
A 12 189 143953 1078.4 639 624 132.9
A 13 254 11481 81.68 639 624 132.9
B 12 16 55056 424.76 643 622 128.2
B 12 111 16128 121.0 643 622 128.2
B 11 111 14993 112.14 643 622 128.2
C 1 3 12127 77.97 630 630 147.5
C 3 233 7816 48.73 630 630 147.5
C 14 67 7181 44.43 630 630 147.5
D 7 38 279320 1781.68 629 608 156.4
D 2 249 254510 1623.08 629 608 156.4
D 2 120 57723 365.11 629 608 156.4

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