ASTROSAT CZTI

Data Quality Report

Orbit 31892

Creation date: 2024-06-27T20:33:55.000518
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/AS1T04_042T01_9000004650_31892cztM0_level2.evt modeM0/AS1T04_042T01_9000004650_31892cztM0_level2_quad_clean.evt
Size (bytes)593,130,24094,184,640
Size565.7 MB 89.8 MB
Events in quadrant A3,052,521630,564
Events in quadrant B5,483,275609,167
Events in quadrant C4,947,301574,118
Events in quadrant D4,045,801590,633

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132501
B0209371
C0190321
D0162242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416380.592269%
B64163194.971945%
C64165738.930798%
D6415771.200312%

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 6996 6417 0 0 0.00% 0.00%
B 6996 6417 93 93 1.33% 1.45%
C 6996 6417 341 341 4.87% 5.31%
D 6995 6416 58 58 0.83% 0.90%

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 13 254 9481 54.96 788 771 158.5
A 13 6 7973 45.44 788 771 158.5
A 3 137 7858 44.72 788 771 158.5
B 6 159 1847666 12583.32 767 747 146.8
B 5 172 304296 2068.12 767 747 146.8
B 5 255 99019 669.54 767 747 146.8
C 0 10 971013 5815.79 711 714 166.8
C 0 239 760573 4554.45 711 714 166.8
C 3 233 241718 1444.53 711 714 166.8
D 8 195 591744 3251.34 753 731 181.8
D 12 233 348041 1910.66 753 731 181.8
D 12 218 142965 782.47 753 731 181.8

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