ASTROSAT CZTI

Data Quality Report

Orbit 21781

Creation date: 2024-06-27T18:32:03.549195
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_005T01_9000003224_21781cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21781cztM0_level2_quad_clean.evt
Size (bytes)3,332,563,200267,621,120
Size3.1 GB 255.2 MB
Events in quadrant A12,439,2031,800,012
Events in quadrant B14,240,4501,821,941
Events in quadrant C12,520,0441,743,035
Events in quadrant D59,963,563930,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539977
B0589745
C0539494
D01961014

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A262312350.895887%
B262335992.283384%
C262333431.307513%
D262332099480.028971%

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 44413 26235 0 0 0.00% 0.00%
B 44414 26237 245 245 0.55% 0.93%
C 44414 26237 0 0 0.00% 0.00%
D 44414 26234 18880 18880 42.51% 71.97%

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 48655 70.79 3217 3144 642.9
A 0 226 28065 38.76 3217 3144 642.9
A 3 137 26345 36.09 3217 3144 642.9
B 3 64 977843 1606.47 3202 3126 606.7
B 0 190 209345 339.88 3202 3126 606.7
B 0 197 159221 257.27 3202 3126 606.7
C 14 238 480310 661.73 3088 3109 721.1
C 13 61 21626 25.68 3088 3109 721.1
C 3 248 11759 11.99 3088 3109 721.1
D 7 238 50896777 112247.54 1861 1805 453.4
D 1 52 1016555 2238.0 1861 1805 453.4
D 14 35 270919 593.52 1861 1805 453.4

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