ASTROSAT CZTI

Data Quality Report

Orbit 11907

Creation date: 2024-06-27T16:19:55.237913
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/AS1A04_088T05_9000001764_11907cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11907cztM0_level2_quad_clean.evt
Size (bytes)1,460,217,600244,791,360
Size1.4 GB 233.5 MB
Events in quadrant A10,864,4771,535,968
Events in quadrant B12,099,7261,507,305
Events in quadrant C8,555,7361,572,522
Events in quadrant D11,416,4561,485,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0444515
B0480794
C0387234
D0468194

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A190366033.167682%
B190369875.184913%
C190361330.698676%
D190367854.123765%

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 21843 19037 180 180 0.82% 0.95%
B 21844 19038 544 544 2.49% 2.86%
C 21844 19038 0 0 0.00% 0.00%
D 21843 19037 464 464 2.12% 2.44%

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 63 999754 2212.51 2228 2175 450.9
A 8 15 426085 940.18 2228 2175 450.9
A 1 162 337737 744.23 2228 2175 450.9
B 4 239 2659846 6333.81 2211 2157 419.6
B 15 204 202593 477.68 2211 2157 419.6
B 5 8 116882 273.41 2211 2157 419.6
C 13 61 15806 26.76 2195 2205 508.3
C 3 202 5536 6.55 2195 2205 508.3
C -1 -1 -1 -1.0 2195 2205 508.3
D 1 52 1854433 3537.77 2166 2102 523.6
D 8 195 303912 576.43 2166 2102 523.6
D 13 249 208635 394.46 2166 2102 523.6

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