ASTROSAT CZTI

Data Quality Report

Orbit 34779

Creation date: 2022-03-05T02:33:06.879430
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_9000004990_34779cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34779cztM0_level2_quad_clean.evt
Size (bytes)885,769,920118,264,320
Size844.7 MB 112.8 MB
Events in quadrant A5,235,384731,845
Events in quadrant B7,686,032711,093
Events in quadrant C5,398,830735,038
Events in quadrant D7,810,430690,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223323
B0295712
C0223872
D0304012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A102991031.000097%
B102997507.282260%
C10299710.689387%
D102992182.116710%

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 13404 10301 83 83 0.62% 0.81%
B 13404 10301 494 494 3.69% 4.80%
C 13404 10301 52 52 0.39% 0.50%
D 13404 10301 194 194 1.45% 1.88%

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 7 16 429046 1793.13 1188 1166 238.6
A 15 169 96627 400.05 1188 1166 238.6
A 10 83 80534 332.61 1188 1166 238.6
B 5 172 2140305 9616.46 1163 1132 222.4
B 0 244 477400 2141.02 1163 1132 222.4
B 5 255 219359 981.02 1163 1132 222.4
C 15 214 438435 1612.67 1163 1174 271.1
C 0 10 181330 664.43 1163 1174 271.1
C 14 67 102302 372.97 1163 1174 271.1
D 8 195 2101715 7495.43 1148 1115 280.3
D 2 250 524885 1868.93 1148 1115 280.3
D 1 52 370922 1319.56 1148 1115 280.3

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