ASTROSAT CZTI

Data Quality Report

Orbit 22541

Creation date: 2024-06-27T18:42:33.889583
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/AS1A07_049T01_9000003344_22541cztM0_level2.evt modeM0/AS1A07_049T01_9000003344_22541cztM0_level2_quad_clean.evt
Size (bytes)650,160,00085,688,640
Size620.0 MB 81.7 MB
Events in quadrant A3,471,619532,813
Events in quadrant B3,714,464541,104
Events in quadrant C3,627,202518,979
Events in quadrant D8,371,117482,109

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153442
B0159372
C0155462
D0300042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7470520.696118%
B74711011.351894%
C7470901.204819%
D7470150020.080321%

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 8605 7470 0 0 0.00% 0.00%
B 8606 7472 2 2 0.02% 0.03%
C 8605 7471 0 0 0.00% 0.00%
D 8605 7470 1430 1430 16.62% 19.14%

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 13 254 11272 57.14 899 877 181.9
A 3 137 8026 39.3 899 877 181.9
A 0 226 7729 37.66 899 877 181.9
B 15 33 146442 836.97 900 877 173.9
B 12 111 21345 117.69 900 877 173.9
B 11 111 18751 102.77 900 877 173.9
C 14 238 135055 648.51 871 873 206.9
C 0 207 76811 367.01 871 873 206.9
C 10 91 9857 43.42 871 873 206.9
D 7 223 3274887 17839.31 752 730 183.5
D 1 52 1881253 10246.07 752 730 183.5
D 2 136 178472 968.43 752 730 183.5

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