ASTROSAT CZTI

Data Quality Report

Orbit 01788

Creation date: 2024-06-27T14:12:42.895985
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/AS1G02_020T01_9000000296_01788cztM0_level2.evt modeM0/AS1G02_020T01_9000000296_01788cztM0_level2_quad_clean.evt
Size (bytes)1,107,345,60086,109,120
Size1.0 GB 82.1 MB
Events in quadrant A8,086,019545,675
Events in quadrant B8,339,854554,004
Events in quadrant C7,898,296538,298
Events in quadrant D8,760,425494,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02886313
B0295971
C0283251
D0309251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A681770.102684%
B681920.029330%
C681920.029330%
D68194306.305910%

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 7529 6819 156 156 2.07% 2.29%
B 7529 6819 160 160 2.13% 2.35%
C 7529 6820 118 118 1.57% 1.73%
D 7529 6820 690 690 9.16% 10.12%

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 15 236 52132 99.08 2096 2111 504.9
A 0 231 11063 17.73 2096 2111 504.9
A 10 2 9533 14.7 2096 2111 504.9
B 0 244 26205 46.76 2183 2191 513.6
B 4 216 22382 39.31 2183 2191 513.6
B 4 200 11605 18.33 2183 2191 513.6
C 9 236 21484 34.45 2017 2092 562.9
C 10 82 9725 13.56 2017 2092 562.9
C -1 -1 -1 -1.0 2017 2092 562.9
D 2 16 1124574 1958.6 1852 1920 573.2
D 7 85 293693 509.03 1852 1920 573.2
D 10 172 140999 242.64 1852 1920 573.2

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