ASTROSAT CZTI

Data Quality Report

Orbit 07335

Creation date: 2024-06-27T15:18:32.808081
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/AS1A02_178T01_9000001006_07335cztM0_level2.evt modeM0/AS1A02_178T01_9000001006_07335cztM0_level2_quad_clean.evt
Size (bytes)2,944,532,160393,773,760
Size2.7 GB 375.5 MB
Events in quadrant A24,857,8752,280,620
Events in quadrant B17,013,6772,501,572
Events in quadrant C25,733,7472,407,566
Events in quadrant D19,233,0282,353,443

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0977628
B0737297
C01003997
D0813117

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07060
B07060
C07060
D07060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34662380110.965899%
B346625131.480007%
C34662388711.214010%
D346628872.558998%

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 38602 34663 2699 2699 6.99% 7.79%
B 38602 34664 15 15 0.04% 0.04%
C 38602 34664 3031 3031 7.85% 8.74%
D 38602 34663 388 388 1.01% 1.12%

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 15 234 9952449 12952.75 3800 3713 768.1
A 14 111 213277 272.84 3800 3713 768.1
A 13 248 50114 60.41 3800 3713 768.1
B 0 214 542286 703.4 4050 3950 765.3
B 11 51 425010 550.17 4050 3950 765.3
B 4 81 151538 192.84 4050 3950 765.3
C 9 68 10869962 12466.61 3773 3791 871.6
C 1 16 57563 61.69 3773 3791 871.6
C 10 22 49677 52.64 3773 3791 871.6
D 2 216 2795563 2941.1 3903 3784 949.2
D 14 34 619881 649.05 3903 3784 949.2
D 12 221 457099 477.56 3903 3784 949.2

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