ASTROSAT CZTI

Data Quality Report

Orbit 13739

Creation date: 2024-06-27T16:45:24.926291
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/AS1G08_062T01_9000002038_13739cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13739cztM0_level2_quad_clean.evt
Size (bytes)495,446,40098,769,600
Size472.5 MB 94.2 MB
Events in quadrant A3,230,196627,620
Events in quadrant B3,571,177621,114
Events in quadrant C3,331,993651,912
Events in quadrant D4,410,590617,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139793
B0149402
C0140692
D0178342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67831432.108212%
B67831722.535751%
C6783941.385817%
D67831492.196668%

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 7314 6785 3 3 0.04% 0.04%
B 7314 6786 23 23 0.31% 0.34%
C 7314 6786 1 1 0.01% 0.01%
D 7314 6786 27 27 0.37% 0.40%

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 15 69 27622 155.77 828 810 172.1
A 1 162 14696 80.68 828 810 172.1
A 0 226 7528 39.03 828 810 172.1
B 3 64 192630 1207.25 820 799 158.9
B 10 252 55146 342.02 820 799 158.9
B 4 173 46873 289.95 820 799 158.9
C 3 233 123918 654.26 807 814 188.2
C 0 207 48880 255.46 807 814 188.2
C 14 234 7196 33.92 807 814 188.2
D 13 168 601178 2964.72 803 780 202.5
D 5 222 300099 1478.01 803 780 202.5
D 10 157 177076 870.54 803 780 202.5

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