ASTROSAT CZTI

Data Quality Report

Orbit 06574

Creation date: 2024-06-27T15:08:57.980980
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/AS1C02_008T01_9000000884_06574cztM0_level2.evt modeM0/AS1C02_008T01_9000000884_06574cztM0_level2_quad_clean.evt
Size (bytes)498,908,16070,407,360
Size475.8 MB 67.1 MB
Events in quadrant A3,359,709412,248
Events in quadrant B4,100,012413,665
Events in quadrant C3,272,898410,679
Events in quadrant D3,889,809395,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148013
B0168342
C0147282
D0164282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7169731.018273%
B71691251.743618%
C7169390.544009%
D71691141.590180%

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 7830 7170 1 1 0.01% 0.01%
B 7830 7170 24 24 0.31% 0.33%
C 7830 7170 0 0 0.00% 0.00%
D 7830 7170 70 70 0.89% 0.98%

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 8 15 84253 483.08 846 827 172.7
A 13 251 15542 85.21 846 827 172.7
A 0 226 8187 42.62 846 827 172.7
B 5 143 496223 2961.97 854 830 167.3
B 4 172 94170 558.08 854 830 167.3
B 4 81 88817 526.08 854 830 167.3
C 9 237 10578 49.76 833 837 195.8
C 1 16 8508 39.18 833 837 195.8
C 13 61 6370 28.26 833 837 195.8
D 2 152 179503 882.12 821 797 202.6
D 2 63 160565 788.64 821 797 202.6
D 14 34 149349 733.27 821 797 202.6

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