ASTROSAT CZTI

Data Quality Report

Orbit 02987

Creation date: 2024-06-27T14:23:07.212413
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/AS1G05_238T05_9000000418_02987cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02987cztM0_level2_quad_clean.evt
Size (bytes)373,129,92051,742,080
Size355.8 MB 49.3 MB
Events in quadrant A3,653,869295,695
Events in quadrant B2,431,896305,708
Events in quadrant C2,259,328306,306
Events in quadrant D2,604,896298,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144143
B0110182
C0106962
D0115292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51481633.166278%
B5148410.796426%
C5148280.543901%
D5148240.466200%

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 7302 5149 144 144 1.97% 2.80%
B 7302 5149 34 34 0.47% 0.66%
C 7302 5149 23 23 0.31% 0.45%
D 7302 5149 24 24 0.33% 0.47%

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 9 1205214 11261.64 521 509 107.0
A 0 31 180888 1686.19 521 509 107.0
A 12 247 131178 1221.5 521 509 107.0
B 0 219 118622 1128.6 541 528 104.6
B 2 249 99446 945.34 541 528 104.6
B 14 50 40136 378.53 541 528 104.6
C 6 80 94423 759.69 522 524 123.6
C 10 21 36584 291.74 522 524 123.6
C 15 208 35625 283.98 522 524 123.6
D 13 114 136323 1083.68 513 498 125.3
D 9 35 135729 1078.94 513 498 125.3
D 12 17 116465 925.24 513 498 125.3

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