ASTROSAT CZTI

Data Quality Report

Orbit 18000

Creation date: 2024-06-27T17:43:36.692740
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_108T02_9000002676_18000cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_18000cztM0_level2_quad_clean.evt
Size (bytes)1,588,792,320270,714,240
Size1.5 GB 258.2 MB
Events in quadrant A11,184,3001,666,571
Events in quadrant B10,860,0211,700,967
Events in quadrant C11,814,6641,643,423
Events in quadrant D12,709,0541,610,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04660
B04660
C04660
D04660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484414
B0472744
C0492104
D0530344

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A229241500.654336%
B229242000.872448%
C229243641.587856%
D229242741.195254%

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 24774 22929 18 18 0.07% 0.08%
B 24774 22929 26 26 0.10% 0.11%
C 24774 22929 62 62 0.25% 0.27%
D 24774 22929 184 184 0.74% 0.80%

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 15 174 582986 1050.79 2736 2676 552.3
A 4 2 57357 99.01 2736 2676 552.3
A 0 226 23802 38.25 2736 2676 552.3
B 4 173 77570 143.85 2729 2658 520.8
B 12 111 64662 119.06 2729 2658 520.8
B 11 111 55526 101.52 2729 2658 520.8
C 3 233 546914 881.31 2638 2650 617.6
C 0 207 508084 818.44 2638 2650 617.6
C 14 238 405304 652.01 2638 2650 617.6
D 5 222 1456008 2043.67 2637 2579 711.2
D 11 176 846839 1187.12 2637 2579 711.2
D 7 96 143278 197.84 2637 2579 711.2

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