ASTROSAT CZTI

Data Quality Report

Orbit 11535

Creation date: 2024-06-27T16:14:24.679990
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/AS1G08_009T01_9000001692_11535cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11535cztM0_level2_quad_clean.evt
Size (bytes)225,910,08028,995,840
Size215.4 MB 27.7 MB
Events in quadrant A1,815,215180,168
Events in quadrant B1,587,965184,166
Events in quadrant C1,221,160183,066
Events in quadrant D2,058,470163,222

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070442
B062831
C050001
D076571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23131797.738867%
B23131647.090359%
C2313431.859058%
D231327111.716386%

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 3599 2315 57 57 1.58% 2.46%
B 3599 2315 56 56 1.56% 2.42%
C 3599 2315 0 0 0.00% 0.00%
D 3599 2315 155 155 4.31% 6.70%

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 8 5 487970 7259.74 322 316 67.2
A 1 162 31796 468.65 322 316 67.2
A 1 178 17814 260.49 322 316 67.2
B 4 239 280491 4480.35 320 313 62.5
B 15 204 33963 538.1 320 313 62.5
B 0 187 7932 121.84 320 313 62.5
C 13 61 2290 26.74 312 314 73.9
C 12 4 1786 19.92 312 314 73.9
C 3 202 751 5.91 312 314 73.9
D 1 52 796242 10800.65 302 293 73.7
D 13 137 44861 604.77 302 293 73.7
D 2 120 37843 509.54 302 293 73.7

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