ASTROSAT CZTI

Data Quality Report

Orbit 01094

Creation date: 2024-06-27T14:07:23.286884
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/AS1P01_997T02_9000000212_01094cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01094cztM0_level2_quad_clean.evt
Size (bytes)1,996,957,440190,022,400
Size1.9 GB 181.2 MB
Events in quadrant A15,012,8111,230,370
Events in quadrant B15,812,6171,235,661
Events in quadrant C15,397,3791,207,116
Events in quadrant D13,409,3631,198,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0536854
B0560683
C0548283
D0490263

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12799260.203141%
B12799130.101570%
C12799120.093757%
D1279930.023439%

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 14844 12802 376 376 2.53% 2.94%
B 14844 12802 401 401 2.70% 3.13%
C 14844 12802 389 389 2.62% 3.04%
D 14844 12802 171 171 1.15% 1.34%

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 4 32 168652 178.82 3840 3867 921.5
A 15 233 88265 91.59 3840 3867 921.5
A 11 79 17745 15.06 3840 3867 921.5
B 4 187 155348 158.15 4052 4065 956.6
B 5 249 52074 50.19 4052 4065 956.6
B 5 184 45342 43.15 4052 4065 956.6
C 15 241 648966 627.8 3688 3817 1027.6
C 10 207 214547 205.06 3688 3817 1027.6
C 3 111 53417 48.27 3688 3817 1027.6
D 10 125 114302 100.65 3540 3671 1099.1
D 2 216 47048 39.46 3540 3671 1099.1
D 14 34 19896 14.76 3540 3671 1099.1

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