ASTROSAT CZTI

Data Quality Report

Orbit 00682

Creation date: 2024-06-27T14:01:29.215023
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_141T01_9000000096_00682cztM0_level2.evt modeM0/AS1P01_141T01_9000000096_00682cztM0_level2_quad_clean.evt
Size (bytes)520,680,96025,153,920
Size496.6 MB 24.0 MB
Events in quadrant A4,006,847129,572
Events in quadrant B4,122,028131,454
Events in quadrant C3,740,304131,621
Events in quadrant D3,669,208124,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02866514330
B02940214701
C02718213591
D02670613353

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013668
B013668
C013668
D013668

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344310.029044%
B344300.000000%
C344300.000000%
D344350.145222%

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 3443 3443 35 35 1.02% 1.02%
B 3443 3443 37 37 1.07% 1.07%
C 3443 3443 22 22 0.64% 0.64%
D 3443 3443 31 31 0.90% 0.90%

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 12 236 8467 33.27 1041 1034 223.4
A 13 164 5438 19.71 1041 1034 223.4
A 3 111 2989 8.75 1041 1034 223.4
B 8 4 78876 316.75 1040 1048 245.7
B 0 220 67557 270.69 1040 1048 245.7
B 7 221 20323 78.45 1040 1048 245.7
C 8 208 7782 25.65 952 987 264.9
C 15 241 6024 19.02 952 987 264.9
C 9 52 3029 7.71 952 987 264.9
D 1 4 55438 188.86 944 976 288.4
D 13 252 30999 104.11 944 976 288.4
D 13 207 29436 98.69 944 976 288.4

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