ASTROSAT CZTI

Data Quality Report

Orbit 34899

Creation date: 2022-03-13T03:39:51.656550
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/AS1A11_053T01_9000004996_34899cztM0_level2.evt modeM0/AS1A11_053T01_9000004996_34899cztM0_level2_quad_clean.evt
Size (bytes)455,290,56096,408,000
Size434.2 MB 91.9 MB
Events in quadrant A2,558,210646,185
Events in quadrant B3,163,435664,127
Events in quadrant C2,911,375669,718
Events in quadrant D4,800,256572,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109273
B0128272
C0117602
D0180712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523690.171887%
B52361132.158136%
C5236691.317800%
D523659611.382735%

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 9183 5238 0 0 0.00% 0.00%
B 9183 5238 79 79 0.86% 1.51%
C 9183 5238 53 53 0.58% 1.01%
D 9183 5238 554 554 6.03% 10.58%

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 58976 451.59 639 629 129.2
A 9 143 11812 86.55 639 629 129.2
A 7 16 10560 76.86 639 629 129.2
B 5 172 204840 1693.32 641 627 120.6
B 3 112 126756 1045.85 641 627 120.6
B 0 190 121327 1000.84 641 627 120.6
C 15 214 236991 1618.63 634 641 146.0
C 0 10 150678 1027.52 634 641 146.0
C 14 67 19404 128.5 634 641 146.0
D 1 52 997789 7039.64 586 571 141.7
D 8 195 955915 6744.04 586 571 141.7
D 10 118 232860 1639.79 586 571 141.7

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