ASTROSAT CZTI

Data Quality Report

Orbit 34541

Creation date: 2022-02-16T23:27:22.646496
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/AS1A05_115T02_9000004934_34541cztM0_level2.evt modeM0/AS1A05_115T02_9000004934_34541cztM0_level2_quad_clean.evt
Size (bytes)459,619,20082,918,080
Size438.3 MB 79.1 MB
Events in quadrant A2,506,522543,995
Events in quadrant B3,069,558543,072
Events in quadrant C2,887,960547,531
Events in quadrant D5,100,232509,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108243
B0125242
C0116282
D0188972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5233110.210204%
B52331082.063826%
C5233581.108351%
D52334819.191668%

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 7056 5234 3 3 0.04% 0.06%
B 7056 5234 65 65 0.92% 1.24%
C 7056 5234 35 35 0.50% 0.67%
D 7056 5234 395 395 5.60% 7.55%

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 9 143 45419 357.15 621 611 125.5
A 10 83 41848 328.68 621 611 125.5
A 4 48 9287 69.15 621 611 125.5
B 5 172 440665 3738.44 614 599 117.7
B 0 190 60393 507.96 614 599 117.7
B 0 245 50479 423.74 614 599 117.7
C 15 214 236056 1674.7 607 612 140.6
C 0 10 151095 1070.38 607 612 140.6
C 14 67 106625 754.06 607 612 140.6
D 8 195 1013522 6265.11 587 574 161.7
D 12 17 601134 3714.48 587 574 161.7
D 7 80 487259 3010.16 587 574 161.7

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