ASTROSAT CZTI

Data Quality Report

Orbit 24235

Creation date: 2024-06-27T19:03:49.449997
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/AS1A07_118T01_9000003586_24235cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24235cztM0_level2_quad_clean.evt
Size (bytes)595,258,56094,438,080
Size567.7 MB 90.1 MB
Events in quadrant A3,618,022591,715
Events in quadrant B4,883,655604,355
Events in quadrant C4,171,718573,586
Events in quadrant D4,847,487570,069

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154731
B0191681
C0169541
D0192861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74652403.215003%
B74666418.585588%
C74663614.835253%
D74664516.040718%

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 7490 7465 0 0 0.00% 0.00%
B 7491 7466 278 278 3.71% 3.72%
C 7491 7466 48 48 0.64% 0.64%
D 7491 7467 219 219 2.92% 2.93%

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 1 25156 128.9 932 908 188.1
A 13 254 13144 65.04 932 908 188.1
A 3 137 8312 39.36 932 908 188.1
B 12 17 1161725 6596.87 905 882 176.0
B 15 33 54808 306.45 905 882 176.0
B 15 32 40281 223.9 905 882 176.0
C 2 16 344776 1630.82 890 896 210.9
C 7 247 208329 983.73 890 896 210.9
C 14 238 138611 653.1 890 896 210.9
D 12 233 975886 4394.58 906 875 221.9
D 7 238 216781 973.13 906 875 221.9
D 12 33 123468 552.55 906 875 221.9

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