ASTROSAT CZTI

Data Quality Report

Orbit 35458

Creation date: 2022-04-21T00:49:54.707500
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_068T03_9000005076_35458cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35458cztM0_level2_quad_clean.evt
Size (bytes)184,740,48040,446,720
Size176.2 MB 38.6 MB
Events in quadrant A1,078,954273,587
Events in quadrant B1,748,102268,232
Events in quadrant C1,336,014264,514
Events in quadrant D1,277,550256,562

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046271
B066281
C053581
D051441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224120.089246%
B22411577.005801%
C2241733.257474%
D2241301.338688%

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 2241 2241 0 0 0.00% 0.00%
B 2241 2241 111 111 4.95% 4.95%
C 2241 2241 50 50 2.23% 2.23%
D 2241 2241 20 20 0.89% 0.89%

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 60686 1122.46 260 254 53.8
A 13 6 7423 133.16 260 254 53.8
A 13 254 3915 68.0 260 254 53.8
B 5 236 361329 7216.51 250 243 50.0
B 5 172 197652 3945.33 250 243 50.0
B 4 251 102272 2039.11 250 243 50.0
C 0 10 198616 3385.57 247 248 58.6
C 15 214 92254 1570.28 247 248 58.6
C 0 207 79584 1354.04 247 248 58.6
D 1 47 79671 1241.44 253 247 64.0
D 13 249 70288 1094.77 253 247 64.0
D 8 195 55354 861.35 253 247 64.0

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