ASTROSAT CZTI

Data Quality Report

Orbit 20284

Creation date: 2024-06-27T18:13:26.125276
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/AS1A05_174T01_9000003008_20284cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20284cztM0_level2_quad_clean.evt
Size (bytes)639,616,32073,866,240
Size610.0 MB 70.4 MB
Events in quadrant A3,655,845443,132
Events in quadrant B4,152,007447,586
Events in quadrant C3,811,585432,614
Events in quadrant D7,265,743413,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154421
B0169621
C0156371
D0266102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71811502.088846%
B71822483.453077%
C71821502.088555%
D718172210.054310%

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 7527 7182 29 29 0.39% 0.40%
B 7528 7183 70 70 0.93% 0.97%
C 7528 7183 22 22 0.29% 0.31%
D 7527 7182 587 587 7.80% 8.17%

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 14 238 88437 494.23 870 851 177.2
A 14 254 73691 411.02 870 851 177.2
A 9 143 52209 289.8 870 851 177.2
B 4 142 339971 2051.32 861 838 165.3
B 0 190 112011 672.45 861 838 165.3
B 7 220 91632 549.19 861 838 165.3
C 3 233 406618 2053.19 835 841 197.6
C 14 238 129365 650.32 835 841 197.6
C 8 208 7457 33.48 835 841 197.6
D 1 52 3826534 18701.85 833 807 204.6
D 5 222 227894 1110.1 833 807 204.6
D 2 234 43540 208.9 833 807 204.6

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