ASTROSAT CZTI

Data Quality Report

Orbit 01005

Creation date: 2024-06-27T14:06:02.711813
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_998T02_9000000190_01005cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01005cztM0_level2_quad_clean.evt
Size (bytes)1,155,539,520124,151,040
Size1.1 GB 118.4 MB
Events in quadrant A8,583,990815,145
Events in quadrant B9,113,695823,992
Events in quadrant C8,854,978809,440
Events in quadrant D7,949,085793,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308081
B0323641
C0315721
D0289721

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744970.093972%
B7449140.187945%
C7449100.134246%
D7449170.228219%

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 7854 7450 196 196 2.50% 2.63%
B 7854 7450 254 254 3.23% 3.41%
C 7854 7450 213 213 2.71% 2.86%
D 7854 7450 166 166 2.11% 2.23%

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 15 233 13542 21.02 2234 2250 537.2
A 11 79 9157 12.86 2234 2250 537.2
A 3 111 7077 8.98 2234 2250 537.2
B 15 22 43069 72.64 2357 2363 560.4
B 5 200 34073 56.59 2357 2363 560.4
B 5 249 24372 39.28 2357 2363 560.4
C 15 241 367382 604.59 2154 2228 604.0
C 3 111 29405 45.0 2154 2228 604.0
C 3 79 25628 38.74 2154 2228 604.0
D 1 4 163209 254.42 2048 2120 633.2
D 2 107 58591 89.19 2048 2120 633.2
D 9 49 34285 50.8 2048 2120 633.2

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