ASTROSAT CZTI

Data Quality Report

Orbit 21396

Creation date: 2024-06-27T18:27:19.146333
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/AS1C04_010T01_9000003158_21396cztM0_level2.evt modeM0/AS1C04_010T01_9000003158_21396cztM0_level2_quad_clean.evt
Size (bytes)668,099,52077,915,520
Size637.1 MB 74.3 MB
Events in quadrant A3,600,021492,880
Events in quadrant B3,510,687499,508
Events in quadrant C4,195,931475,315
Events in quadrant D8,464,374414,974

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147642
B0145942
C0168532
D0297893

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6837570.833699%
B6837751.096972%
C68371862.720491%
D6836168324.619661%

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 7732 6837 0 0 0.00% 0.00%
B 7732 6837 3 3 0.04% 0.04%
C 7732 6837 22 22 0.28% 0.32%
D 7731 6836 1571 1571 20.32% 22.98%

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 5 168 184940 1043.13 877 858 176.5
A 11 47 29732 163.62 877 858 176.5
A 13 254 10816 56.43 877 858 176.5
B 0 190 24070 140.02 872 853 165.8
B 0 245 20697 119.68 872 853 165.8
B 12 111 19151 110.35 872 853 165.8
C 3 233 786784 4022.67 836 842 195.4
C 14 238 132450 673.61 836 842 195.4
C 10 91 16190 78.56 836 842 195.4
D 13 174 2507623 13367.77 767 743 187.5
D 12 235 1857377 9900.38 767 743 187.5
D 1 52 597521 3182.28 767 743 187.5

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