ASTROSAT CZTI

Data Quality Report

Orbit 19457

Creation date: 2024-06-27T18:03:07.756683
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_229T02_9000002890_19457cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19457cztM0_level2_quad_clean.evt
Size (bytes)522,754,56090,826,560
Size498.5 MB 86.6 MB
Events in quadrant A3,616,456570,906
Events in quadrant B3,819,516573,266
Events in quadrant C3,935,149554,437
Events in quadrant D3,965,025544,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153532
B0158572
C0163062
D0167492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73021421.944673%
B73022203.012873%
C73022082.848535%
D73031832.505820%

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 8842 7303 0 0 0.00% 0.00%
B 8842 7302 35 35 0.40% 0.48%
C 8842 7303 10 10 0.11% 0.14%
D 8843 7305 92 92 1.04% 1.26%

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 11 29 32150 166.57 925 906 187.6
A 3 1 12156 59.98 925 906 187.6
A 13 254 9225 44.35 925 906 187.6
B 7 220 140039 786.84 916 894 176.8
B 0 198 44606 247.18 916 894 176.8
B 12 111 20799 112.56 916 894 176.8
C 3 233 196526 949.41 879 884 206.1
C 14 238 137881 664.81 879 884 206.1
C 9 221 111787 538.19 879 884 206.1
D 1 52 392780 1801.61 895 870 217.5
D 7 238 61024 276.53 895 870 217.5
D 13 172 56527 255.86 895 870 217.5

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