ASTROSAT CZTI

Data Quality Report

Orbit 27226

Creation date: 2024-06-27T19:37:55.173950
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/AS1T03_243T01_9000003918_27226cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27226cztM0_level2_quad_clean.evt
Size (bytes)532,756,800114,874,560
Size508.1 MB 109.6 MB
Events in quadrant A3,319,763799,105
Events in quadrant B3,292,650804,449
Events in quadrant C3,209,116745,760
Events in quadrant D5,904,800708,947

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137110
B0135340
C0132720
D0216750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6018851.412429%
B6019851.412195%
C60191101.827546%
D601976312.676524%

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 7323 6019 1 1 0.01% 0.02%
B 7324 6020 0 0 0.00% 0.00%
C 7324 6020 0 0 0.00% 0.00%
D 7324 6020 679 679 9.27% 11.28%

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 0 13 45394 264.77 847 834 168.3
A 13 254 9081 49.0 847 834 168.3
A 0 226 7642 40.45 847 834 168.3
B 4 171 29618 184.96 828 812 155.7
B 0 190 18364 112.7 828 812 155.7
B 12 111 17686 108.35 828 812 155.7
C 14 238 131210 720.26 784 791 181.1
C 15 208 19913 105.6 784 791 181.1
C 13 61 5622 26.68 784 791 181.1
D 1 52 2457990 12807.44 778 762 191.9
D 2 250 225631 1172.05 778 762 191.9
D 5 222 136721 708.64 778 762 191.9

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