ASTROSAT CZTI

Data Quality Report

Orbit 44274

Creation date: 2024-06-27T23:01:14.652034
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/AS1A13_077T01_9000005984_44274cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44274cztM0_level2_quad_clean.evt
Size (bytes)552,882,240114,269,760
Size527.3 MB 109.0 MB
Events in quadrant A5,401,406769,036
Events in quadrant B4,037,102796,877
Events in quadrant C3,901,542762,087
Events in quadrant D6,581,697643,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0212542
B0167852
C0162592
D0244922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70152743.905916%
B70151802.565930%
C70151131.610834%
D701585112.131148%

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 7695 7016 30 30 0.39% 0.43%
B 7695 7016 59 59 0.77% 0.84%
C 7695 7016 39 39 0.51% 0.56%
D 7695 7016 654 654 8.50% 9.32%

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 1741199 10317.26 807 789 168.7
A 15 223 303808 1796.32 807 789 168.7
A 7 3 122418 721.02 807 789 168.7
B 0 219 178846 1104.95 808 782 161.2
B 0 200 154157 951.75 808 782 161.2
B 5 235 126243 778.53 808 782 161.2
C 3 233 491519 2608.3 795 800 188.1
C 14 254 165452 875.17 795 800 188.1
C 4 254 133126 703.35 795 800 188.1
D 1 52 1661925 8669.01 762 739 191.6
D 2 249 405382 2111.65 762 739 191.6
D 13 249 337818 1759.07 762 739 191.6

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