ASTROSAT CZTI

Data Quality Report

Orbit 22902

Creation date: 2024-06-27T18:47:17.126212
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/AS1A08_009T01_9000003382_22902cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22902cztM0_level2_quad_clean.evt
Size (bytes)603,239,040105,690,240
Size575.3 MB 100.8 MB
Events in quadrant A3,282,000709,401
Events in quadrant B3,380,109717,586
Events in quadrant C3,251,927684,338
Events in quadrant D7,874,551595,651

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144702
B0146492
C0144082
D0282392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70821111.567354%
B70821161.637955%
C70821251.765038%
D7082139819.740186%

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 7672 7083 0 0 0.00% 0.00%
B 7672 7083 3 3 0.04% 0.04%
C 7672 7083 0 0 0.00% 0.00%
D 7672 7083 1133 1133 14.77% 16.00%

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 13 254 11937 65.21 848 829 170.3
A 0 226 7532 39.35 848 829 170.3
A 3 137 7131 37.0 848 829 170.3
B 4 216 24400 149.66 837 815 157.6
B 12 111 19506 118.6 837 815 157.6
B 0 189 17853 108.11 837 815 157.6
C 14 238 127706 683.21 801 803 185.7
C 13 61 5575 25.69 801 803 185.7
C 7 247 4027 17.36 801 803 185.7
D 1 239 4426598 24222.55 756 733 182.7
D 1 52 278695 1521.27 756 733 182.7
D 12 227 140083 762.66 756 733 182.7

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