ASTROSAT CZTI

Data Quality Report

Orbit 07283

Creation date: 2024-06-27T15:17:57.424428
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/AS1G06_154T03_9000000996_07283cztM0_level2.evt modeM0/AS1G06_154T03_9000000996_07283cztM0_level2_quad_clean.evt
Size (bytes)479,678,40095,976,000
Size457.5 MB 91.5 MB
Events in quadrant A3,520,332602,795
Events in quadrant B3,487,402617,670
Events in quadrant C3,267,111607,307
Events in quadrant D3,764,178578,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153513
B0151892
C0148362
D0164022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71841442.004454%
B71841321.837416%
C7184570.793430%
D71841662.310690%

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 8894 7184 22 22 0.25% 0.31%
B 8894 7184 27 27 0.30% 0.38%
C 8894 7186 6 6 0.07% 0.08%
D 8894 7185 84 84 0.94% 1.17%

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 15 239 177787 1023.28 847 828 172.9
A 14 111 41753 236.65 847 828 172.9
A 8 15 35205 198.79 847 828 172.9
B 4 239 51899 309.33 854 832 165.1
B 0 214 45354 269.68 854 832 165.1
B 4 81 39402 233.63 854 832 165.1
C 1 16 38960 196.83 826 829 193.7
C 13 61 6254 28.0 826 829 193.7
C 9 68 5821 25.77 826 829 193.7
D 2 14 221836 1089.0 820 794 203.0
D 2 216 139321 682.47 820 794 203.0
D 15 223 107476 525.59 820 794 203.0

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