ASTROSAT CZTI

Data Quality Report

Orbit 17818

Creation date: 2024-06-27T17:41:16.528545
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/AS1A05_015T01_9000002650_17818cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17818cztM0_level2_quad_clean.evt
Size (bytes)503,786,880111,487,680
Size480.4 MB 106.3 MB
Events in quadrant A3,479,709730,047
Events in quadrant B3,665,951762,109
Events in quadrant C3,544,569724,889
Events in quadrant D4,101,456681,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146462
B0151712
C0148062
D0167952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6849520.759235%
B6850821.197080%
C68501271.854015%
D68502854.160584%

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 9584 6851 1 1 0.01% 0.01%
B 9585 6852 3 3 0.03% 0.04%
C 9585 6852 0 0 0.00% 0.00%
D 9585 6852 236 236 2.46% 3.44%

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 15 174 54146 298.02 891 877 178.7
A 0 226 7834 38.92 891 877 178.7
A 12 194 6401 30.91 891 877 178.7
B 0 230 81861 482.01 902 883 168.0
B 12 111 19193 108.99 902 883 168.0
B 11 111 16904 95.36 902 883 168.0
C 14 238 136551 678.07 868 877 200.1
C 5 218 15141 71.29 868 877 200.1
C 3 233 6950 30.35 868 877 200.1
D 2 33 552528 2738.03 847 826 201.5
D 10 70 250765 1240.41 847 826 201.5
D 1 52 40045 194.64 847 826 201.5

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