ASTROSAT CZTI

Data Quality Report

Orbit 37874

Creation date: 2024-06-27T21:45:34.321751
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/AS1C07_001T12_9000005352_37874cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37874cztM0_level2_quad_clean.evt
Size (bytes)449,812,80084,971,520
Size429.0 MB 81.0 MB
Events in quadrant A3,097,297550,368
Events in quadrant B3,290,045552,054
Events in quadrant C2,957,078541,249
Events in quadrant D3,877,810517,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130273
B0138592
C0124952
D0156442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5899500.847601%
B58991342.271571%
C5899490.830649%
D58992313.915918%

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 7213 5900 32 32 0.44% 0.54%
B 7213 5900 95 95 1.32% 1.61%
C 7213 5900 43 43 0.60% 0.73%
D 7213 5900 192 192 2.66% 3.25%

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 10 83 376621 2887.86 651 638 130.2
A 9 143 123554 944.1 651 638 130.2
A 15 222 35345 266.58 651 638 130.2
B 5 172 416869 3382.05 645 628 123.1
B 0 189 133075 1076.16 645 628 123.1
B 0 230 47991 384.83 645 628 123.1
C 15 214 249233 1661.04 636 639 149.7
C 0 10 137066 911.57 636 639 149.7
C 14 254 74966 496.63 636 639 149.7
D 12 233 411663 2677.89 630 614 153.5
D 2 249 185880 1206.97 630 614 153.5
D 1 52 120352 780.07 630 614 153.5

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