ASTROSAT CZTI

Data Quality Report

Orbit 01157

Creation date: 2024-06-27T14:08:22.977343
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_997T03_9000000216_01157cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01157cztM0_level2_quad_clean.evt
Size (bytes)910,935,36094,144,320
Size868.7 MB 89.8 MB
Events in quadrant A6,991,717625,949
Events in quadrant B7,194,970628,174
Events in quadrant C6,871,031595,991
Events in quadrant D6,139,304590,283

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249582
B0255511
C0245441
D0224695

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876250.425459%
B5876240.408441%
C587660.102110%
D5875130.221277%

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 7106 5876 169 169 2.38% 2.88%
B 7106 5877 203 203 2.86% 3.45%
C 7106 5876 155 155 2.18% 2.64%
D 7106 5876 116 116 1.63% 1.97%

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 4 32 29652 64.62 1810 1823 430.6
A 12 243 10348 19.8 1810 1823 430.6
A 13 164 9006 16.68 1810 1823 430.6
B 6 53 36392 78.13 1872 1881 441.7
B 15 22 19279 39.39 1872 1881 441.7
B 8 4 16143 32.29 1872 1881 441.7
C 15 241 257463 554.12 1663 1713 461.5
C 9 52 85785 182.15 1663 1713 461.5
C 3 111 18504 36.38 1663 1713 461.5
D 10 85 41573 79.69 1624 1679 500.6
D 2 152 20645 37.88 1624 1679 500.6
D 13 205 7129 10.89 1624 1679 500.6

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