ASTROSAT CZTI

Data Quality Report

Orbit 24745

Creation date: 2024-06-27T19:09:25.120396
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/AS1A07_018T08_9000003622_24745cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24745cztM0_level2_quad_clean.evt
Size (bytes)778,348,800129,620,160
Size742.3 MB 123.6 MB
Events in quadrant A4,396,981838,541
Events in quadrant B4,805,763843,174
Events in quadrant C5,731,457808,562
Events in quadrant D7,992,574773,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195543
B0207423
C0232073
D0305823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9547640.670368%
B95471811.895884%
C95473403.561328%
D95466356.652001%

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 10086 9547 2 2 0.02% 0.02%
B 10086 9546 10 10 0.10% 0.10%
C 10086 9546 7 7 0.07% 0.07%
D 10085 9545 488 488 4.84% 5.11%

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 17264 70.68 1134 1110 228.6
A 3 137 10426 40.76 1134 1110 228.6
A 0 226 9688 37.53 1134 1110 228.6
B 15 33 166877 774.34 1121 1091 214.1
B 4 80 63843 293.1 1121 1091 214.1
B 0 190 63277 290.45 1121 1091 214.1
C 7 247 1153691 4580.84 1079 1087 251.6
C 14 238 168804 666.56 1079 1087 251.6
C 10 91 140690 554.83 1079 1087 251.6
D 1 52 2728111 10414.51 1075 1043 261.9
D 8 195 915388 3491.83 1075 1043 261.9
D 12 233 159368 604.63 1075 1043 261.9

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