ASTROSAT CZTI

Data Quality Report

Orbit 37351

Creation date: 2024-06-27T21:38:52.389837
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/AS1C07_014T01_9000005314_37351cztM0_level2.evt modeM0/AS1C07_014T01_9000005314_37351cztM0_level2_quad_clean.evt
Size (bytes)709,384,32063,250,560
Size676.5 MB 60.3 MB
Events in quadrant A3,469,971406,652
Events in quadrant B3,060,404412,135
Events in quadrant C4,994,311384,004
Events in quadrant D9,577,598316,607

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137003
B0125812
C0184572
D0323372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56521011.786978%
B5652841.486200%
C56524698.297948%
D5652255345.169851%

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 7115 5653 81 81 1.14% 1.43%
B 7115 5653 58 58 0.82% 1.03%
C 7115 5653 427 427 6.00% 7.55%
D 7115 5653 2457 2457 34.53% 43.46%

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 296479 2204.07 657 644 134.2
A 13 248 271324 2016.66 657 644 134.2
A 15 237 217345 1614.5 657 644 134.2
B 5 172 193815 1524.74 654 638 126.7
B 5 255 128395 1008.38 654 638 126.7
B 0 190 82364 645.06 654 638 126.7
C 1 23 1644229 11163.69 626 631 147.2
C 14 254 566506 3843.55 626 631 147.2
C 15 214 236546 1602.39 626 631 147.2
D 12 235 3508998 26683.97 521 508 131.5
D 12 227 3028259 23027.69 521 508 131.5
D 2 249 497244 3777.95 521 508 131.5

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