ASTROSAT CZTI

Data Quality Report

Orbit 27985

Creation date: 2024-06-27T19:46:45.602329
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/AS1A10_065T03_9000004040_27985cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27985cztM0_level2_quad_clean.evt
Size (bytes)1,847,897,280344,280,960
Size1.7 GB 328.3 MB
Events in quadrant A12,769,0352,277,676
Events in quadrant B12,013,5492,271,606
Events in quadrant C12,712,1112,113,749
Events in quadrant D16,858,7402,122,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526860
B0504520
C0530120
D0657440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A238577643.202414%
B238584902.053818%
C238586002.514880%
D238579423.948527%

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 25782 23860 401 401 1.56% 1.68%
B 25783 23860 2 2 0.01% 0.01%
C 25783 23861 106 106 0.41% 0.44%
D 25782 23859 613 613 2.38% 2.57%

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 6 16 975448 1596.31 3058 3002 609.2
A 13 254 32987 49.22 3058 3002 609.2
A 3 137 30158 44.58 3058 3002 609.2
B 12 111 74505 123.79 3026 2950 578.0
B 11 111 67466 111.61 3026 2950 578.0
B 14 111 65003 107.35 3026 2950 578.0
C 10 22 846253 1249.82 2894 2916 674.8
C 14 238 463458 682.52 2894 2916 674.8
C 3 233 111100 160.33 2894 2916 674.8
D 1 52 4249464 6141.51 2923 2850 691.5
D 8 195 1189853 1716.66 2923 2850 691.5
D 7 80 332211 476.33 2923 2850 691.5

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