ASTROSAT CZTI

Data Quality Report

Orbit 20230701_A12_101T01_9000005722_level2

Creation date: 2023-07-04T11:38:36.570813
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_101T01_9000005722cztM0_level2.fits modeM0/AS1A12_101T01_9000005722cztM0_level2_quad_clean.evt
Size (bytes)307,460,160315,273,600
Size293.2 MB 300.7 MB
Events in quadrant A1,858,8961,914,004
Events in quadrant B1,782,5021,903,306
Events in quadrant C1,819,0081,803,697
Events in quadrant D1,546,5961,622,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0718130
B0729310
C0676530
D0848170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06840
B06840
C06840
D06840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A33545920.274258%
B335454311.284841%
C33545180.053659%
D3354510303.070502%

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 47322 33544 0 0 0.00% 0.00%
B 47322 33542 0 0 0.00% 0.00%
C 47322 33544 0 0 0.00% 0.00%
D 47322 33536 0 0 0.00% 0.00%

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 7 110 1556 9.03 484 457 121.7
A 9 19 1492 8.5 484 457 121.7
A 0 29 1488 8.47 484 457 121.7
B 2 9 1516 11.65 470 450 91.5
B 3 80 1290 9.18 470 450 91.5
B 3 17 1254 8.78 470 450 91.5
C 1 81 1467 8.16 479 450 124.6
C 3 202 1433 7.89 479 450 124.6
C 3 203 1419 7.78 479 450 124.6
D 7 3 1202 6.72 442 404 118.7
D 10 189 1139 6.19 442 404 118.7
D 15 46 1125 6.07 442 404 118.7

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