ASTROSAT CZTI

Data Quality Report

Orbit 20954

Creation date: 2024-06-27T18:21:37.378106
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/AS1A05_088T05_9000003088_20954cztM0_level2.evt modeM0/AS1A05_088T05_9000003088_20954cztM0_level2_quad_clean.evt
Size (bytes)509,382,72087,013,440
Size485.8 MB 83.0 MB
Events in quadrant A3,223,414559,158
Events in quadrant B3,383,133566,275
Events in quadrant C3,173,707539,459
Events in quadrant D5,192,960504,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139182
B0143912
C0136652
D0200632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C0-1-1
D0-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6686210.314089%
B6686420.628178%
C6685610.912491%
D66855438.122663%

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 7691 6687 12 12 0.16% 0.18%
B 7691 6687 12 12 0.16% 0.18%
C 7690 6686 4 4 0.05% 0.06%
D 7690 6686 524 524 6.81% 7.84%

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 96 77928 480.34 802 786 160.6
A 5 16 49433 302.91 802 786 160.6
A 15 174 12426 72.48 802 786 160.6
B 7 220 128794 834.37 804 787 153.4
B 0 190 36458 232.51 804 787 153.4
B 3 64 27200 172.16 804 787 153.4
C 14 238 121068 662.23 773 777 181.6
C 9 54 32777 176.17 773 777 181.6
C 13 61 5250 24.62 773 777 181.6
D 1 20 1104429 5929.23 762 741 186.1
D 1 52 861935 4626.5 762 741 186.1
D 1 239 191656 1025.63 762 741 186.1

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