ASTROSAT CZTI

Data Quality Report

Orbit 35227

Creation date: 2022-04-04T08:54:36.985497
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/AS1C07_004T01_9000005052_35227cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35227cztM0_level2_quad_clean.evt
Size (bytes)1,439,907,840106,848,000
Size1.3 GB 101.9 MB
Events in quadrant A5,042,430680,484
Events in quadrant B14,462,339572,029
Events in quadrant C5,562,476685,128
Events in quadrant D17,827,907560,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218024
B0503413
C0227233
D0603983

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10629230.216389%
B10629345132.467777%
C10629730.686800%
D10629288327.123906%

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 13553 10631 5 5 0.04% 0.05%
B 13553 10631 2286 2286 16.87% 21.50%
C 13553 10631 59 59 0.44% 0.55%
D 13553 10629 2854 2854 21.06% 26.85%

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 165418 664.4 1231 1208 247.2
A 9 143 58209 230.63 1231 1208 247.2
A 13 6 28436 110.17 1231 1208 247.2
B 5 236 8839332 42769.93 1073 1043 206.6
B 5 172 1240841 5999.59 1073 1043 206.6
B 5 200 55254 262.34 1073 1043 206.6
C 15 214 442204 1597.4 1191 1199 276.1
C 0 10 251938 908.22 1191 1199 276.1
C 1 23 129686 465.4 1191 1199 276.1
D 8 195 8980986 33416.75 1107 1076 268.7
D 7 80 2258945 8402.16 1107 1076 268.7
D 2 250 975293 3625.33 1107 1076 268.7

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