ASTROSAT CZTI

Data Quality Report

Orbit 12582

Creation date: 2024-06-27T16:29:32.493920
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/AS1A04_130T04_9000001872_12582cztM0_level2.evt modeM0/AS1A04_130T04_9000001872_12582cztM0_level2_quad_clean.evt
Size (bytes)519,770,880108,584,640
Size495.7 MB 103.6 MB
Events in quadrant A3,587,782683,626
Events in quadrant B4,297,145702,611
Events in quadrant C3,585,175697,215
Events in quadrant D3,745,231666,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016208134
B018056128
C016294125
D016804118

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01562
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77363033.916753%
B77393714.793901%
C77391662.144980%
D77432242.892936%

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 7817 7784 0 0 0.00% 0.00%
B 7817 7789 67 67 0.86% 0.86%
C 7817 7783 4 4 0.05% 0.05%
D 7817 7792 18 18 0.23% 0.23%

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 12 189 22022 110.64 926 902 190.9
A 0 226 8152 37.98 926 902 190.9
A 12 194 7302 33.53 926 902 190.9
B 4 239 325399 1814.33 925 899 178.9
B 3 64 267442 1490.28 925 899 178.9
B 11 51 53894 296.3 925 899 178.9
C 15 208 56243 263.96 903 908 209.6
C 13 61 6514 26.74 903 908 209.6
C 14 234 5718 22.94 903 908 209.6
D 1 52 212931 975.85 898 870 217.3
D 13 249 72162 328.07 898 870 217.3
D 2 234 28111 125.36 898 870 217.3

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