ASTROSAT CZTI

Data Quality Report

Orbit 35401

Creation date: 2022-09-12T18:04:45.058244
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_022T01_9000005070_35401cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35401cztM0_level2_quad_clean.evt
Size (bytes)745,349,76078,920,640
Size710.8 MB 75.3 MB
Events in quadrant A2,728,299572,517
Events in quadrant B9,280,597437,718
Events in quadrant C3,655,648554,418
Events in quadrant D6,529,579431,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117663
B0314422
C0142942
D0230812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560250.089254%
B5602271248.411282%
C56022354.194930%
D5602152227.168868%

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 7183 5603 0 0 0.00% 0.00%
B 7183 5603 2297 2297 31.98% 41.00%
C 7183 5603 169 169 2.35% 3.02%
D 7183 5602 1165 1165 16.22% 20.80%

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 128987 967.36 655 641 132.7
A 9 143 44406 329.86 655 641 132.7
A 13 6 17503 127.09 655 641 132.7
B 4 251 3604678 36546.75 502 488 98.6
B 5 14 888797 9007.52 502 488 98.6
B 5 31 847676 8590.55 502 488 98.6
C 0 207 554333 3766.41 627 633 147.0
C 0 10 332210 2255.47 627 633 147.0
C 15 214 228387 1549.24 627 633 147.0
D 7 80 3501291 26138.53 540 523 133.9
D 13 249 283870 2115.61 540 523 133.9
D 8 195 138424 1029.64 540 523 133.9

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