ASTROSAT CZTI

Data Quality Report

Orbit 41942

Creation date: 2024-06-27T22:34:47.001839
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_099T03_9000005720_41942cztM0_level2.fits modeM0/AS1A12_099T03_9000005720_41942cztM0_level2_quad_clean.evt
Size (bytes)350,928,00090,388,800
Size334.7 MB 86.2 MB
Events in quadrant A2,939,522613,196
Events in quadrant B2,923,040609,261
Events in quadrant C2,534,806600,825
Events in quadrant D4,156,575521,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120542
B0126982
C0112482
D0162092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5599180.321486%
B55991492.661189%
C559930.053581%
D55984407.859950%

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 7152 5600 4 4 0.06% 0.07%
B 7152 5600 121 121 1.69% 2.16%
C 7152 5600 0 0 0.00% 0.00%
D 7151 5599 454 454 6.35% 8.11%

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 551791 4374.24 607 595 126.0
A 2 79 17285 132.45 607 595 126.0
A 6 10 9782 72.91 607 595 126.0
B 7 202 240607 2094.37 587 570 114.6
B 0 229 233153 2029.34 587 570 114.6
B 5 255 109599 951.3 587 570 114.6
C 15 214 231058 1679.75 587 590 137.2
C 3 233 8960 61.0 587 590 137.2
C 13 61 3937 24.39 587 590 137.2
D 1 47 506507 3582.67 573 556 141.2
D 13 249 404304 2858.96 573 556 141.2
D 2 120 378370 2675.32 573 556 141.2

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