ASTROSAT CZTI

Data Quality Report

Orbit 20220322_A10_123T17_9000005018_level2

Creation date: 2022-06-08T16:49:24.426428
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_123T17_9000005018cztM0_level2_bc.evt modeM0/AS1A10_123T17_9000005018cztM0_level2_quad_clean.evt
Size (bytes)1,746,449,280585,457,920
Size1.6 GB 558.3 MB
Events in quadrant A8,718,0653,831,967
Events in quadrant B10,032,7623,855,646
Events in quadrant C10,294,4173,812,685
Events in quadrant D21,156,7413,521,119

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0814980
B0869730
C0835710
D01256250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08060
B08060
C08060
D08060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39510530.134143%
B395104331.095925%
C395101200.303721%
D3951017434.411541%

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 54029 39513 1 1 0.00% 0.00%
B 54029 39508 77 77 0.14% 0.19%
C 54029 39507 9 9 0.02% 0.02%
D 54029 39508 178 178 0.33% 0.45%

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 10 83 389523 839.73 2095 2065 461.4
A 13 6 71209 149.86 2095 2065 461.4
A 13 254 54430 113.49 2095 2065 461.4
B 5 172 720220 1750.63 2097 2057 410.2
B 5 200 585896 1423.2 2097 2057 410.2
B 0 190 193215 465.98 2097 2057 410.2
C 15 214 1544954 3286.97 2058 2041 469.4
C 0 10 298448 631.45 2058 2041 469.4
C 14 67 255250 539.43 2058 2041 469.4
D 8 195 6154938 12859.1 2024 1961 478.5
D 14 52 2342704 4891.92 2024 1961 478.5
D 13 249 1464729 3057.04 2024 1961 478.5

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