ASTROSAT CZTI

Data Quality Report

Orbit 35950

Creation date: 2024-06-27T21:20:25.019934
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/AS1A11_080T01_9000005146_35950cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35950cztM0_level2_quad_clean.evt
Size (bytes)1,385,709,120172,249,920
Size1.3 GB 164.3 MB
Events in quadrant A5,236,8481,232,814
Events in quadrant B22,457,003910,099
Events in quadrant C6,456,1141,193,389
Events in quadrant D7,093,7921,135,755

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222213
B0740702
C0254922
D0282352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10720130.121269%
B10720817176.222015%
C107205304.944030%
D107204263.973881%

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 13434 10722 1 1 0.01% 0.01%
B 13434 10722 7405 7405 55.12% 69.06%
C 13434 10722 417 417 3.10% 3.89%
D 13434 10722 322 322 2.40% 3.00%

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 10 83 257729 987.34 1274 1252 259.8
A 15 169 26175 95.94 1274 1252 259.8
A 13 6 20089 72.51 1274 1252 259.8
B 5 14 5707618 30961.87 955 937 184.3
B 5 31 5655099 30676.92 955 937 184.3
B 5 15 5644638 30620.17 955 937 184.3
C 9 187 998358 3519.67 1202 1215 283.3
C 15 214 432614 1522.73 1202 1215 283.3
C 0 10 203158 712.81 1202 1215 283.3
D 1 52 579948 1949.35 1214 1187 296.9
D 10 118 380722 1278.33 1214 1187 296.9
D 12 6 317227 1064.47 1214 1187 296.9

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