ASTROSAT CZTI

Data Quality Report

Orbit 49719

Creation date: 2024-12-10T06:09:12.332168
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/AS1T05_233T01_9000006438_49719cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49719cztM0_level2_quad_clean.evt
Size (bytes)1,180,526,40039,510,720
Size1.1 GB 37.7 MB
Events in quadrant A15,292,10583,512
Events in quadrant B3,669,876638,467
Events in quadrant C8,408,327165
Events in quadrant D15,830,89225,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496913
B0154261
C0295181
D0514841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6422579790.267829%
B64221412.195578%
C6423642299.984431%
D6423618896.341274%

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 7347 6423 5916 5916 80.52% 92.11%
B 7347 6423 62 62 0.84% 0.97%
C 7347 6422 664 664 9.04% 10.34%
D 7348 6423 5276 5276 71.80% 82.14%

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 7311014 53509.64 490 475 136.6
A 12 50 2143515 15686.02 490 475 136.6
A 4 205 730279 5341.82 490 475 136.6
B 10 128 157045 1110.01 674 654 140.9
B 5 49 155384 1098.22 674 654 140.9
B 3 233 148219 1047.37 674 654 140.9
C 15 180 2675028 136289.34 38 37 19.6
C 15 190 2637484 134376.5 38 37 19.6
C 15 163 544478 27738.97 38 37 19.6
D 15 40 4305340 50735.12 221 210 84.9
D 7 61 3256472 38374.42 221 210 84.9
D 15 122 1789396 21085.21 221 210 84.9

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