ASTROSAT CZTI

Data Quality Report

Orbit 35310

Creation date: 2022-04-09T23:08:33.998462
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/AS1T05_023T01_9000005058_35310cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35310cztM0_level2_quad_clean.evt
Size (bytes)681,635,52087,880,320
Size650.1 MB 83.8 MB
Events in quadrant A3,556,709616,838
Events in quadrant B8,553,851499,226
Events in quadrant C3,386,756611,436
Events in quadrant D4,747,386520,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144653
B0294802
C0135972
D0181212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5903160.271049%
B5903226038.285617%
C59031141.931221%
D590366211.214637%

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 7246 5904 1 1 0.01% 0.02%
B 7245 5903 1748 1748 24.13% 29.61%
C 7246 5904 100 100 1.38% 1.69%
D 7246 5904 254 254 3.51% 4.30%

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 785854 5744.09 676 662 136.7
A 10 83 103057 749.07 676 662 136.7
A 9 143 27254 194.53 676 662 136.7
B 5 236 4266091 39046.77 566 552 109.2
B 5 172 1987824 18191.5 566 552 109.2
B 5 200 67085 609.04 566 552 109.2
C 0 10 345955 2262.2 657 661 152.6
C 15 214 244414 1596.96 657 661 152.6
C 3 233 187288 1222.69 657 661 152.6
D 10 203 1011846 6978.31 599 583 144.9
D 8 195 753857 5198.03 599 583 144.9
D 12 235 266447 1834.62 599 583 144.9

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