ASTROSAT CZTI

Data Quality Report

Orbit 41266

Creation date: 2024-06-27T22:26:45.673125
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/AS1A12_052T04_9000005638_41266cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41266cztM0_level2_quad_clean.evt
Size (bytes)471,669,120125,775,360
Size449.8 MB 119.9 MB
Events in quadrant A3,961,629846,886
Events in quadrant B4,501,408852,278
Events in quadrant C3,899,434816,868
Events in quadrant D4,495,182753,436

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163893
B0184312
C0164652
D0188712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7747130.167807%
B77471552.000774%
C7747971.252098%
D77471952.517103%

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 10704 7749 4 4 0.04% 0.05%
B 10704 7749 97 97 0.91% 1.25%
C 10704 7749 95 95 0.89% 1.23%
D 10704 7749 196 196 1.83% 2.53%

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 646092 3688.42 854 837 174.9
A 13 254 11723 62.23 854 837 174.9
A 3 137 9481 49.41 854 837 174.9
B 5 185 511032 3138.85 839 814 162.5
B 5 255 378637 2324.36 839 814 162.5
B 0 190 116544 711.97 839 814 162.5
C 15 214 328504 1666.69 835 838 196.6
C 0 10 310678 1576.01 835 838 196.6
C 7 220 10986 51.62 835 838 196.6
D 1 52 946576 4654.65 833 811 203.2
D 13 249 129348 632.6 833 811 203.2
D 8 230 90455 441.19 833 811 203.2

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