ASTROSAT CZTI

Data Quality Report

Orbit 40274

Creation date: 2024-06-27T22:14:26.958193
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_056T02_9000005538_40274cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40274cztM0_level2_quad_clean.evt
Size (bytes)315,120,96085,769,280
Size300.5 MB 81.8 MB
Events in quadrant A2,652,722588,218
Events in quadrant B2,423,489601,400
Events in quadrant C2,397,184568,184
Events in quadrant D3,816,492501,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108093
B0103252
C099922
D0146852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4809310.644625%
B4809641.330838%
C4809190.395093%
D48092525.240175%

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 6932 4810 14 14 0.20% 0.29%
B 6932 4810 49 49 0.71% 1.02%
C 6932 4810 9 9 0.13% 0.19%
D 6932 4810 218 218 3.14% 4.53%

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 428841 3825.82 544 534 112.0
A 13 248 103077 915.96 544 534 112.0
A 13 6 13419 115.09 544 534 112.0
B 0 245 153518 1480.61 541 527 103.3
B 5 255 91794 883.26 541 527 103.3
B 0 230 45312 433.42 541 527 103.3
C 15 214 208073 1660.42 533 536 125.0
C 14 254 58533 464.01 533 536 125.0
C 0 10 25699 201.32 533 536 125.0
D 12 227 696318 5441.98 518 504 127.9
D 9 19 314584 2456.43 518 504 127.9
D 12 0 301377 2353.14 518 504 127.9

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