ASTROSAT CZTI

Data Quality Report

Orbit 35584

Creation date: 2022-04-28T12:31:39.246479
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/AS1A10_071T01_9000005096_35584cztM0_level2.evt modeM0/AS1A10_071T01_9000005096_35584cztM0_level2_quad_clean.evt
Size (bytes)449,015,04061,220,160
Size428.2 MB 58.4 MB
Events in quadrant A2,948,164373,723
Events in quadrant B3,707,907347,830
Events in quadrant C3,348,212364,318
Events in quadrant D3,193,541355,520

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124403
B0148062
C0133622
D0134352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5894150.254496%
B58944277.244656%
C58941402.375297%
D5894781.323380%

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 9448 5896 3 3 0.03% 0.05%
B 9448 5896 304 304 3.22% 5.16%
C 9448 5896 109 109 1.15% 1.85%
D 9448 5896 63 63 0.67% 1.07%

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 10 83 142459 1010.13 692 678 140.4
A 15 169 122637 868.91 692 678 140.4
A 13 6 9632 63.79 692 678 140.4
B 5 172 1027530 7952.94 659 641 129.1
B 4 232 35902 273.09 659 641 129.1
B 0 189 21250 159.61 659 641 129.1
C 0 10 425783 2728.8 669 673 155.8
C 15 214 260958 1670.78 669 673 155.8
C 10 49 38711 244.17 669 673 155.8
D 13 249 179976 1099.16 671 652 163.1
D 7 80 153420 936.38 671 652 163.1
D 12 233 76540 465.15 671 652 163.1

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