ASTROSAT CZTI

Data Quality Report

Orbit 01020

Creation date: 2024-06-27T14:06:15.710836
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/AS1P01_998T02_9000000190_01020cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01020cztM0_level2_quad_clean.evt
Size (bytes)1,177,502,400125,536,320
Size1.1 GB 119.7 MB
Events in quadrant A8,703,050826,116
Events in quadrant B9,329,806830,610
Events in quadrant C8,967,919817,989
Events in quadrant D8,159,022802,072

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312332
B0330792
C0319812
D0296612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A755070.092715%
B7550280.370861%
C755050.066225%
D7550801.059603%

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 8495 7551 178 178 2.10% 2.36%
B 8495 7551 287 287 3.38% 3.80%
C 8495 7551 231 231 2.72% 3.06%
D 8495 7551 240 240 2.83% 3.18%

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 12 189 24128 40.33 2254 2272 541.9
A 4 32 14027 21.69 2254 2272 541.9
A 11 79 10336 14.88 2254 2272 541.9
B 0 220 104936 183.82 2382 2391 557.9
B 5 249 70600 122.27 2382 2391 557.9
B 15 22 55660 95.49 2382 2391 557.9
C 15 241 386587 633.61 2170 2249 606.6
C 3 111 34816 53.69 2170 2249 606.6
C 3 79 31242 47.8 2170 2249 606.6
D 1 83 334304 522.65 2058 2129 635.6
D 9 64 75122 114.85 2058 2129 635.6
D 9 49 36640 54.3 2058 2129 635.6

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