ASTROSAT CZTI

Data Quality Report

Orbit 26954

Creation date: 2024-06-27T19:34:53.671554
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/AS1A09_134T01_9000003896_26954cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26954cztM0_level2_quad_clean.evt
Size (bytes)696,173,76071,758,080
Size663.9 MB 68.4 MB
Events in quadrant A3,321,737462,286
Events in quadrant B9,593,129365,244
Events in quadrant C3,667,818460,664
Events in quadrant D4,067,863436,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134020
B0329370
C0145900
D0161080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412811.263256%
B6412228435.620711%
C64131802.806799%
D64132313.602058%

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 7567 6412 3 3 0.04% 0.05%
B 7567 6412 1733 1733 22.90% 27.03%
C 7568 6413 17 17 0.22% 0.27%
D 7568 6413 102 102 1.35% 1.59%

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 14 235 26285 151.74 849 835 167.7
A 6 16 12585 70.05 849 835 167.7
A 13 254 10520 57.74 849 835 167.7
B 0 189 6512659 45200.66 771 755 144.1
B 0 219 22684 152.21 771 755 144.1
B 12 111 16747 111.0 771 755 144.1
C 2 16 308576 1629.13 824 830 188.9
C 14 238 134374 706.95 824 830 188.9
C 15 208 10525 51.32 824 830 188.9
D 1 52 618965 3199.24 819 798 193.2
D 2 250 168588 868.37 819 798 193.2
D 15 145 89095 456.97 819 798 193.2

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