ASTROSAT CZTI

Data Quality Report

Orbit 16476

Creation date: 2024-06-27T17:23:10.301383
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/AS1C04_007T03_9000002436_16476cztM0_level2.evt modeM0/AS1C04_007T03_9000002436_16476cztM0_level2_quad_clean.evt
Size (bytes)766,272,960106,548,480
Size730.8 MB 101.6 MB
Events in quadrant A5,438,495658,072
Events in quadrant B7,904,120620,416
Events in quadrant C4,663,039658,934
Events in quadrant D4,571,823644,661

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221801
B0295031
C0191711
D0197411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92824404.740358%
B9282180119.403146%
C92821171.260504%
D9282951.023486%

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 9803 9283 296 296 3.02% 3.19%
B 9803 9283 1269 1269 12.95% 13.67%
C 9803 9284 0 0 0.00% 0.00%
D 9803 9284 44 44 0.45% 0.47%

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 15 174 1132219 4968.17 1120 1095 227.7
A 0 226 9569 37.22 1120 1095 227.7
A 12 194 8303 31.66 1120 1095 227.7
B 5 65 3115622 15424.19 1054 1029 201.9
B 15 35 242687 1196.75 1054 1029 201.9
B 3 209 140578 691.08 1054 1029 201.9
C 3 233 250524 985.52 1082 1091 253.1
C 14 238 168085 659.8 1082 1091 253.1
C 7 247 27178 103.07 1082 1091 253.1
D 2 33 120592 442.74 1102 1074 269.9
D 1 52 114969 421.91 1102 1074 269.9
D 13 168 74246 271.06 1102 1074 269.9

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