ASTROSAT CZTI

Data Quality Report

Orbit 35640

Creation date: 2022-05-10T13:56:46.318205
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/AS1A11_106T01_9000005102_35640cztM0_level2.evt modeM0/AS1A11_106T01_9000005102_35640cztM0_level2_quad_clean.evt
Size (bytes)1,334,407,680118,837,440
Size1.2 GB 113.3 MB
Events in quadrant A21,578,210527,619
Events in quadrant B6,531,247816,925
Events in quadrant C6,792,376817,362
Events in quadrant D4,896,193801,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0701644
B0252393
C0258883
D0204613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9124869195.254274%
B91244585.019728%
C91245425.940377%
D9124840.920649%

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 13341 9126 8359 8359 62.66% 91.60%
B 13341 9126 334 334 2.50% 3.66%
C 13341 9126 466 466 3.49% 5.11%
D 13341 9126 81 81 0.61% 0.89%

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 15 169 18445508 120813.6 763 750 152.7
A 10 83 152908 996.64 763 750 152.7
A 12 189 23301 147.71 763 750 152.7
B 5 172 2178902 10710.53 1078 1049 203.3
B 0 197 71900 348.44 1078 1049 203.3
B 0 189 34507 164.54 1078 1049 203.3
C 0 10 2201601 9010.73 1065 1076 244.2
C 15 214 372533 1521.05 1065 1076 244.2
C 7 220 57131 229.53 1065 1076 244.2
D 13 249 190825 733.72 1078 1056 258.6
D 12 217 189263 727.68 1078 1056 258.6
D 7 80 177081 680.58 1078 1056 258.6

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