ASTROSAT CZTI

Data Quality Report

Orbit 23844

Creation date: 2024-06-27T18:59:18.406624
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/AS1A07_027T03_9000003528_23844cztM0_level2.evt modeM0/AS1A07_027T03_9000003528_23844cztM0_level2_quad_clean.evt
Size (bytes)561,366,72090,230,400
Size535.4 MB 86.1 MB
Events in quadrant A3,595,527557,892
Events in quadrant B3,697,664567,552
Events in quadrant C3,774,342545,658
Events in quadrant D5,414,156528,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158484
B0158993
C0160623
D0213633

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76531111.450412%
B76531421.855482%
C76531882.456553%
D76531642.142950%

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 7818 7656 0 0 0.00% 0.00%
B 7818 7656 0 0 0.00% 0.00%
C 7818 7656 3 3 0.04% 0.04%
D 7818 7656 33 33 0.42% 0.43%

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 13 254 13039 64.09 932 913 189.2
A 3 137 8324 39.17 932 913 189.2
A 0 226 8020 37.56 932 913 189.2
B 12 111 22029 116.93 935 910 180.6
B 11 111 19234 101.45 935 910 180.6
B 14 111 16672 87.27 935 910 180.6
C 14 238 140975 661.13 898 903 211.9
C 0 239 51140 237.11 898 903 211.9
C 7 247 40773 188.18 898 903 211.9
D 8 195 1611190 7295.03 902 872 220.7
D 1 52 252089 1138.06 902 872 220.7
D 12 218 54830 244.44 902 872 220.7

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