ASTROSAT CZTI

Data Quality Report

Orbit 27867

Creation date: 2024-06-27T19:45:22.460774
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/AS1A10_002T05_9000004024_27867cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27867cztM0_level2_quad_clean.evt
Size (bytes)552,098,880101,681,280
Size526.5 MB 97.0 MB
Events in quadrant A3,437,310677,849
Events in quadrant B3,872,685660,051
Events in quadrant C3,462,700642,570
Events in quadrant D5,476,971614,929

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146400
B0161000
C0145990
D0209790

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6947781.122787%
B69471021.468260%
C69471181.698575%
D69474516.492011%

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 7622 6948 8 8 0.10% 0.12%
B 7622 6947 5 5 0.07% 0.07%
C 7622 6947 0 0 0.00% 0.00%
D 7622 6948 368 368 4.83% 5.30%

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 13 248 46525 258.57 874 855 176.6
A 13 254 13002 68.77 874 855 176.6
A 3 137 8190 41.53 874 855 176.6
B 10 246 127773 775.67 856 834 163.7
B 0 230 121860 739.54 856 834 163.7
B 0 190 113903 690.91 856 834 163.7
C 14 238 132532 673.42 833 840 195.6
C 3 233 76223 385.48 833 840 195.6
C 13 61 5700 24.85 833 840 195.6
D 13 104 1040797 5280.72 831 812 196.9
D 1 52 688970 3494.25 831 812 196.9
D 2 250 504508 2557.61 831 812 196.9

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