ASTROSAT CZTI

Data Quality Report

Orbit 28800

Creation date: 2024-06-27T19:56:30.309926
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_103T01_9000004132_28800cztM0_level2.evt modeM0/AS1A10_103T01_9000004132_28800cztM0_level2_quad_clean.evt
Size (bytes)613,353,600114,246,720
Size584.9 MB 109.0 MB
Events in quadrant A3,952,371739,073
Events in quadrant B3,942,213758,058
Events in quadrant C4,065,155714,693
Events in quadrant D6,072,526690,910

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167972
B0167632
C0170052
D0236482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8017760.947986%
B8018760.947867%
C80172463.068479%
D80173244.041412%

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 9782 8017 1 1 0.01% 0.01%
B 9783 8018 0 0 0.00% 0.00%
C 9782 8017 0 0 0.00% 0.00%
D 9781 8016 230 230 2.35% 2.87%

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 15 174 50886 249.53 993 971 200.0
A 14 235 32633 158.28 993 971 200.0
A 14 239 25755 123.9 993 971 200.0
B 5 255 24396 122.88 991 965 190.7
B 12 111 23260 116.92 991 965 190.7
B 11 111 21278 106.53 991 965 190.7
C 14 238 217731 971.9 949 957 223.0
C 14 254 95791 425.18 949 957 223.0
C 3 233 26770 115.73 949 957 223.0
D 1 52 1683647 7392.49 948 921 227.6
D 8 195 560650 2458.98 948 921 227.6
D 12 233 84164 365.7 948 921 227.6

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