ASTROSAT CZTI

Data Quality Report

Orbit 19395

Creation date: 2024-06-27T18:02:20.380147
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/AS1A05_208T03_9000002874_19395cztM0_level2.evt modeM0/AS1A05_208T03_9000002874_19395cztM0_level2_quad_clean.evt
Size (bytes)629,775,36095,941,440
Size600.6 MB 91.5 MB
Events in quadrant A3,413,844663,094
Events in quadrant B3,394,364666,799
Events in quadrant C3,355,439625,729
Events in quadrant D8,489,574516,219

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141021
B0138961
C0136831
D0296142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6212590.949775%
B6213641.030098%
C6213931.496861%
D6212154724.903413%

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 7552 6212 0 0 0.00% 0.00%
B 7553 6213 1 1 0.01% 0.02%
C 7553 6213 0 0 0.00% 0.00%
D 7552 6212 1358 1358 17.98% 21.86%

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 5 16 25233 141.7 876 861 172.0
A 12 96 14072 76.81 876 861 172.0
A 13 254 8981 47.21 876 861 172.0
B 12 111 18222 109.45 858 841 158.8
B 3 64 16811 100.56 858 841 158.8
B 11 111 16670 99.67 858 841 158.8
C 14 238 131468 692.19 822 831 188.7
C 3 233 12598 62.35 822 831 188.7
C 0 10 6077 27.8 822 831 188.7
D 10 66 2092676 11563.02 758 739 180.9
D 1 52 1967587 10871.6 758 739 180.9
D 7 238 1524610 8423.08 758 739 180.9

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