ASTROSAT CZTI

Data Quality Report

Orbit 06576

Creation date: 2024-06-27T15:08:59.515550
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/AS1C02_008T01_9000000884_06576cztM0_level2.evt modeM0/AS1C02_008T01_9000000884_06576cztM0_level2_quad_clean.evt
Size (bytes)604,581,12084,467,520
Size576.6 MB 80.6 MB
Events in quadrant A4,088,521498,504
Events in quadrant B4,417,683498,905
Events in quadrant C4,027,404495,537
Events in quadrant D5,199,347474,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179254
B0186563
C0179523
D0213813

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84954044.755739%
B84954485.273690%
C84952903.413773%
D84955796.815774%

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 8740 8498 0 0 0.00% 0.00%
B 8740 8498 13 13 0.15% 0.15%
C 8740 8498 0 0 0.00% 0.00%
D 8740 8498 179 179 2.05% 2.11%

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 8 15 56578 256.92 1047 1019 216.2
A 0 226 9873 40.94 1047 1019 216.2
A 12 194 9315 38.36 1047 1019 216.2
B 0 219 85092 406.43 1051 1022 206.9
B 4 81 63227 300.72 1051 1022 206.9
B 3 220 60337 286.75 1051 1022 206.9
C 13 61 8012 28.74 1029 1031 242.9
C 12 4 5899 20.04 1029 1031 242.9
C 9 237 4256 13.28 1029 1031 242.9
D 2 33 742769 2976.02 1004 970 249.3
D 1 239 369100 1476.9 1004 970 249.3
D 12 233 136136 542.27 1004 970 249.3

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