ASTROSAT CZTI

Data Quality Report

Orbit 36681

Creation date: 2024-06-27T21:30:12.302020
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/AS1T05_041T01_9000005234_36681cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36681cztM0_level2_quad_clean.evt
Size (bytes)403,001,280105,802,560
Size384.3 MB 100.9 MB
Events in quadrant A2,593,674714,578
Events in quadrant B3,295,682716,274
Events in quadrant C3,004,207731,506
Events in quadrant D2,975,485695,640

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105563
B0127922
C0117472
D0119482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4943110.222537%
B49432254.551892%
C49431122.265830%
D4943581.173376%

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 7066 4944 2 2 0.03% 0.04%
B 7066 4944 140 140 1.98% 2.83%
C 7066 4944 66 66 0.93% 1.33%
D 7066 4944 46 46 0.65% 0.93%

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 201422 1661.59 612 601 120.9
A 9 143 11860 93.16 612 601 120.9
A 13 254 8589 66.09 612 601 120.9
B 5 255 531105 4724.67 596 580 112.3
B 0 189 332600 2956.85 596 580 112.3
B 0 221 25289 220.05 596 580 112.3
C 0 10 363654 2608.53 608 614 139.2
C 15 214 226927 1626.11 608 614 139.2
C 14 254 13571 93.1 608 614 139.2
D 2 153 163689 1125.48 609 595 144.9
D 13 171 139985 961.9 609 595 144.9
D 12 227 59634 407.42 609 595 144.9

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