ASTROSAT CZTI

Data Quality Report

Orbit 01240

Creation date: 2024-06-27T14:09:40.383473
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/AS1G04_011T02_9000000226_01240cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01240cztM0_level2_quad_clean.evt
Size (bytes)1,455,779,520101,966,400
Size1.4 GB 97.2 MB
Events in quadrant A9,402,280711,024
Events in quadrant B15,422,672571,098
Events in quadrant C8,228,369697,239
Events in quadrant D10,600,215645,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326043
B0508642
C0291402
D0363782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66131031.557538%
B6613256638.802359%
C6613771.164373%
D661390113.624679%

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 7638 6613 881 881 11.53% 13.32%
B 7637 6612 4216 4216 55.20% 63.76%
C 7638 6613 310 310 4.06% 4.69%
D 7638 6613 1558 1558 20.40% 23.56%

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 3 80 1269667 2579.85 2111 2133 491.3
A 12 243 18079 32.46 2111 2133 491.3
A 13 9 9324 14.64 2111 2133 491.3
B 2 32 6950180 16015.4 1870 1878 433.9
B 5 191 773398 1778.3 1870 1878 433.9
B 8 4 500130 1148.44 1870 1878 433.9
C 15 241 339517 619.96 1984 2060 544.3
C 9 52 85849 153.93 1984 2060 544.3
C 3 111 26536 44.97 1984 2060 544.3
D 10 84 2503178 4547.35 1827 1898 550.1
D 1 239 651280 1180.58 1827 1898 550.1
D 12 22 362738 656.01 1827 1898 550.1

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