ASTROSAT CZTI

Data Quality Report

Orbit 32911

Creation date: 2024-06-27T20:43:22.149562
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_005T01_9000004748_32911cztM0_level2.evt modeM0/AS1C07_005T01_9000004748_32911cztM0_level2_quad_clean.evt
Size (bytes)1,979,170,560360,123,840
Size1.8 GB 343.4 MB
Events in quadrant A9,244,0182,461,952
Events in quadrant B13,482,4312,404,125
Events in quadrant C10,146,1972,465,986
Events in quadrant D25,721,6412,196,636

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409215
B0531054
C0433924
D0907964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20024580.289652%
B2002412716.347383%
C200241490.744107%
D20024226211.296444%

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 25726 20028 25 25 0.10% 0.12%
B 25726 20028 829 829 3.22% 4.14%
C 25726 20028 98 98 0.38% 0.49%
D 25726 20028 2418 2418 9.40% 12.07%

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 15 169 164170 355.56 2291 2244 455.4
A 13 6 60784 128.54 2291 2244 455.4
A 14 63 59442 125.6 2291 2244 455.4
B 5 172 2883763 6821.27 2247 2194 422.4
B 5 200 850879 2009.01 2247 2194 422.4
B 0 219 224946 527.3 2247 2194 422.4
C 14 67 494011 965.88 2225 2245 509.1
C 0 10 328484 640.76 2225 2245 509.1
C 4 254 239476 465.94 2225 2245 509.1
D 8 195 10236260 18855.05 2134 2086 542.8
D 12 227 2233543 4111.15 2134 2086 542.8
D 2 250 1466880 2698.68 2134 2086 542.8

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