ASTROSAT CZTI

Data Quality Report

Orbit 34716

Creation date: 2022-03-02T17:05:03.525820
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/AS1C07_001T01_9000004982_34716cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34716cztM0_level2_quad_clean.evt
Size (bytes)518,976,00095,613,120
Size494.9 MB 91.2 MB
Events in quadrant A3,537,467626,276
Events in quadrant B2,948,048641,025
Events in quadrant C3,148,309630,031
Events in quadrant D5,686,217588,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140813
B0125092
C0127382
D0209692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58671662.829385%
B5867390.664735%
C5867851.448781%
D58673345.692858%

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 7300 5868 138 138 1.89% 2.35%
B 7300 5868 20 20 0.27% 0.34%
C 7300 5868 68 68 0.93% 1.16%
D 7300 5868 272 272 3.73% 4.64%

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 15 169 605863 4495.67 666 654 134.6
A 15 174 179640 1329.56 666 654 134.6
A 9 143 82892 610.89 666 654 134.6
B 5 172 122017 953.41 669 651 127.3
B 4 171 56467 438.47 669 651 127.3
B 4 81 40043 309.45 669 651 127.3
C 15 214 250802 1660.47 654 658 150.6
C 0 10 207551 1373.37 654 658 150.6
C 0 207 66711 438.46 654 658 150.6
D 8 195 1458046 8558.68 643 629 170.3
D 14 52 463207 2716.49 643 629 170.3
D 13 249 430590 2524.95 643 629 170.3

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