ASTROSAT CZTI

Data Quality Report

Orbit 28155

Creation date: 2024-06-27T19:48:39.353913
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/AS1A10_045T04_9000004066_28155cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28155cztM0_level2_quad_clean.evt
Size (bytes)485,061,12096,840,000
Size462.6 MB 92.4 MB
Events in quadrant A3,289,345631,681
Events in quadrant B3,426,255645,432
Events in quadrant C3,353,674614,247
Events in quadrant D4,178,208586,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136180
B0140280
C0138270
D0165350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519580.889707%
B65191151.764074%
C65191021.564657%
D65191562.393005%

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 7699 6520 0 0 0.00% 0.00%
B 7699 6520 12 12 0.16% 0.18%
C 7699 6520 0 0 0.00% 0.00%
D 7699 6520 94 94 1.22% 1.44%

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 13 254 9807 52.72 852 836 170.2
A 3 137 7881 41.4 852 836 170.2
A 0 226 7391 38.52 852 836 170.2
B 10 245 93682 584.73 840 819 158.8
B 10 246 28800 176.19 840 819 158.8
B 12 111 19356 116.72 840 819 158.8
C 14 238 132679 694.42 812 820 189.9
C 3 233 53434 277.08 812 820 189.9
C 13 61 5587 25.1 812 820 189.9
D 7 223 492770 2552.16 812 793 192.8
D 2 250 260712 1348.35 812 793 192.8
D 1 52 177767 918.06 812 793 192.8

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