ASTROSAT CZTI

Data Quality Report

Orbit 46628

Creation date: 2024-06-27T23:25:35.295130
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_080T02_9000006242_46628cztM0_level2.fits modeM0/AS1A13_080T02_9000006242_46628cztM0_level2_quad_clean.evt
Size (bytes)1,327,363,200295,799,040
Size1.2 GB 282.1 MB
Events in quadrant A16,719,9631,999,035
Events in quadrant B11,043,5991,872,912
Events in quadrant C7,862,0601,987,737
Events in quadrant D12,086,9081,828,533

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0613132
B0462712
C0384882
D0493182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183986593.581911%
B1839912236.647100%
C183991941.054405%
D183988954.864659%

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 19503 18400 34 34 0.17% 0.18%
B 19504 18401 625 625 3.20% 3.40%
C 19504 18401 15 15 0.08% 0.08%
D 19503 18400 634 634 3.25% 3.45%

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 8481455 20692.74 1985 1939 409.8
A 0 247 293522 711.55 1985 1939 409.8
A 15 235 89025 212.52 1985 1939 409.8
B 5 32 2616105 6983.18 1910 1847 374.4
B 15 201 497426 1323.78 1910 1847 374.4
B 0 189 153639 405.47 1910 1847 374.4
C 14 254 156985 340.49 1943 1952 455.3
C 12 249 62554 133.1 1943 1952 455.3
C 12 2 16564 32.09 1943 1952 455.3
D 1 52 1451244 2962.38 1948 1886 489.3
D 12 233 1099052 2242.53 1948 1886 489.3
D 13 249 636169 1296.43 1948 1886 489.3

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