ASTROSAT CZTI

Data Quality Report

Orbit 39948

Creation date: 2024-06-27T22:10:29.524135
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_001T01_9000005514_39948cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39948cztM0_level2_quad_clean.evt
Size (bytes)377,717,76090,267,840
Size360.2 MB 86.1 MB
Events in quadrant A2,968,625620,254
Events in quadrant B2,777,554625,911
Events in quadrant C2,626,224606,861
Events in quadrant D5,167,437483,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125962
B0124741
C0116221
D0195851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675220.387665%
B5675550.969163%
C5675110.193833%
D567588915.665198%

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 7227 5676 11 11 0.15% 0.19%
B 7227 5676 35 35 0.48% 0.62%
C 7227 5676 7 7 0.10% 0.12%
D 7227 5676 862 862 11.93% 15.19%

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 471416 3849.11 602 590 122.3
A 13 248 45602 367.98 602 590 122.3
A 15 222 42516 342.75 602 590 122.3
B 5 255 283759 2452.58 597 578 115.5
B 4 171 57297 491.23 597 578 115.5
B 0 230 37490 319.69 597 578 115.5
C 15 214 237498 1721.63 589 592 137.6
C 9 54 40935 293.18 589 592 137.6
C 0 10 28990 206.37 589 592 137.6
D 2 249 2009495 14918.71 545 527 134.7
D 1 47 382680 2837.89 545 527 134.7
D 2 250 375223 2782.51 545 527 134.7

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