ASTROSAT CZTI

Data Quality Report

Orbit 43446

Creation date: 2024-06-27T22:52:05.141059
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_018T01_9000005874_43446cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43446cztM0_level2_quad_clean.evt
Size (bytes)571,078,08072,097,920
Size544.6 MB 68.8 MB
Events in quadrant A10,466,319126,683
Events in quadrant B2,763,976613,281
Events in quadrant C2,497,174589,593
Events in quadrant D5,008,886490,833

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346564
B0116782
C0107332
D0185002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5174412879.783533%
B5174170.328566%
C517460.115964%
D517459711.538462%

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 7326 5173 3081 3081 42.06% 59.56%
B 7327 5175 6 6 0.08% 0.12%
C 7327 5175 0 0 0.00% 0.00%
D 7327 5175 650 650 8.87% 12.56%

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 15 222 9481572 245399.71 180 176 38.6
A 10 83 201907 5221.25 180 176 38.6
A 15 237 77552 2002.66 180 176 38.6
B 0 199 218957 2057.69 559 544 106.1
B 0 189 195190 1833.78 559 544 106.1
B 15 35 41470 385.57 559 544 106.1
C 15 214 215287 1694.94 547 551 126.7
C 3 233 140932 1108.05 547 551 126.7
C 13 61 3708 24.92 547 551 126.7
D 1 52 1616469 12886.4 513 499 125.4
D 1 20 512677 4084.31 513 499 125.4
D 12 6 382977 3050.03 513 499 125.4

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