ASTROSAT CZTI

Data Quality Report

Orbit 23928

Creation date: 2024-06-27T19:00:09.165226
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_142T01_9000003540_23928cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23928cztM0_level2_quad_clean.evt
Size (bytes)719,389,44068,621,760
Size686.1 MB 65.4 MB
Events in quadrant A3,296,740447,099
Events in quadrant B3,450,355449,640
Events in quadrant C4,473,828409,478
Events in quadrant D10,152,392343,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133751
B0139421
C0172401
D0343931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61101111.816694%
B61111532.503682%
C61114968.116511%
D6111263643.135330%

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 7355 6111 0 0 0.00% 0.00%
B 7356 6112 0 0 0.00% 0.00%
C 7356 6112 253 253 3.44% 4.14%
D 7356 6112 2193 2193 29.81% 35.88%

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 2 250 40059 233.8 845 829 167.8
A 13 254 10298 56.43 845 829 167.8
A 0 226 7317 38.67 845 829 167.8
B 0 189 157342 1001.13 837 821 156.3
B 12 111 17695 107.93 837 821 156.3
B 11 111 15762 95.56 837 821 156.3
C 10 9 1111308 6261.07 770 776 177.4
C 7 247 199500 1120.39 770 776 177.4
C 14 238 124109 695.34 770 776 177.4
D 12 218 6444735 41524.2 643 625 155.2
D 1 52 781928 5034.52 643 625 155.2
D 8 195 429038 2760.58 643 625 155.2

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