ASTROSAT CZTI

Data Quality Report

Orbit 09128

Creation date: 2024-06-27T15:41:38.009018
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/AS1G07_028T01_9000001272_09128cztM0_level2.evt modeM0/AS1G07_028T01_9000001272_09128cztM0_level2_quad_clean.evt
Size (bytes)506,471,04095,572,800
Size483.0 MB 91.1 MB
Events in quadrant A4,315,003614,280
Events in quadrant B3,133,873624,937
Events in quadrant C3,097,403612,943
Events in quadrant D4,346,959584,404

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01736235
B01369017
C01366423
D01773047

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65661352.056046%
B6572350.532562%
C6568360.548112%
D65642664.052407%

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 7598 6577 55 55 0.72% 0.84%
B 7598 6578 1 1 0.01% 0.02%
C 7598 6577 5 5 0.07% 0.08%
D 7598 6578 200 200 2.63% 3.04%

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 8 5 1117400 6955.07 783 767 160.5
A 4 2 79364 489.55 783 767 160.5
A 1 162 67087 413.08 783 767 160.5
B 0 214 53696 347.4 792 773 152.3
B 12 111 17306 108.53 792 773 152.3
B 11 111 14011 86.9 792 773 152.3
C 14 234 68020 372.34 771 776 180.6
C 9 68 17625 93.29 771 776 180.6
C 12 4 5957 28.69 771 776 180.6
D 1 52 1336788 6923.18 754 735 193.0
D 2 14 99974 514.24 754 735 193.0
D 2 234 23496 117.94 754 735 193.0

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