ASTROSAT CZTI

Data Quality Report

Orbit 20012

Creation date: 2024-06-27T18:10:03.626439
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/AS1A06_002T02_9000002982_20012cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20012cztM0_level2_quad_clean.evt
Size (bytes)1,467,564,480242,815,680
Size1.4 GB 231.6 MB
Events in quadrant A12,886,0861,517,321
Events in quadrant B9,200,8741,574,197
Events in quadrant C10,319,6501,502,310
Events in quadrant D10,786,0361,481,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0507904
B0398774
C0428234
D0452574

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1855412956.979627%
B185542941.584564%
C185544522.436132%
D185544742.554705%

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 20774 18559 958 958 4.61% 5.16%
B 20774 18559 50 50 0.24% 0.27%
C 20774 18559 53 53 0.26% 0.29%
D 20774 18559 345 345 1.66% 1.86%

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 4164473 9489.13 2175 2130 438.6
A 14 254 344189 779.81 2175 2130 438.6
A 13 254 23097 47.8 2175 2130 438.6
B 7 220 250941 588.87 2208 2152 422.5
B 4 171 111291 258.33 2208 2152 422.5
B 12 111 52018 118.03 2208 2152 422.5
C 9 221 1435499 2883.41 2118 2128 497.1
C 14 238 330927 661.42 2118 2128 497.1
C 0 207 170863 339.43 2118 2128 497.1
D 12 218 1152075 2210.43 2144 2081 520.3
D 1 52 858592 1646.32 2144 2081 520.3
D 1 20 281405 536.9 2144 2081 520.3

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