ASTROSAT CZTI

Data Quality Report

Orbit 24358

Creation date: 2024-06-27T19:05:08.250277
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/AS1A07_145T01_9000003594_24358cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24358cztM0_level2_quad_clean.evt
Size (bytes)730,586,88089,300,160
Size696.7 MB 85.2 MB
Events in quadrant A3,318,280582,080
Events in quadrant B3,355,630597,292
Events in quadrant C3,473,727580,316
Events in quadrant D11,535,390487,293

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142423
B0142922
C0146112
D0387862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6550751.145038%
B6551891.358571%
C65511522.320256%
D6551306546.786750%

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 8675 6552 0 0 0.00% 0.00%
B 8676 6553 0 0 0.00% 0.00%
C 8676 6553 1 1 0.01% 0.02%
D 8676 6553 2782 2782 32.07% 42.45%

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 6 16 17602 97.15 854 838 172.6
A 13 254 10282 54.73 854 838 172.6
A 3 1 8419 43.93 854 838 172.6
B 12 111 19507 114.93 854 833 162.5
B 11 111 17404 101.99 854 833 162.5
B 14 111 15494 90.23 854 833 162.5
C 14 238 132841 674.83 837 843 195.6
C 2 16 49544 248.98 837 843 195.6
C 4 175 13199 63.17 837 843 195.6
D 9 35 7317990 41059.69 734 714 178.2
D 7 238 710449 3982.56 734 714 178.2
D 1 52 394192 2207.94 734 714 178.2

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