ASTROSAT CZTI

Data Quality Report

Orbit 20210208_A10_123T02_9000004160_level2

Creation date: 2025-12-20T07:23:35.327028
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_123T02_9000004160cztM0_level2.fits modeM0/AS1A10_123T02_9000004160cztM0_level2_quad_clean.evt
Size (bytes)1,093,176,000831,484,800
Size1.0 GB 793.0 MB
Events in quadrant A6,847,6124,686,154
Events in quadrant B6,562,3844,782,199
Events in quadrant C6,682,3164,468,768
Events in quadrant D5,582,4263,812,884

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022080
B022080
C022080
D022080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02267280
B02285970
C02527730
D03487030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10838711561.066549%
B10838714501.337799%
C10838724982.304704%
D1083871109710.238313%

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 128828 108379 0 0 0.00% 0.00%
B 128829 108384 0 0 0.00% 0.00%
C 128828 108382 0 0 0.00% 0.00%
D 128828 108175 0 0 0.00% 0.00%

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 0 29 6425 11.0 1782 1679 431.5
A 7 110 5520 8.9 1782 1679 431.5
A 0 30 5100 7.93 1782 1679 431.5
B 2 9 5338 10.94 1737 1661 336.1
B 2 8 4453 8.31 1737 1661 336.1
B 5 128 4422 8.22 1737 1661 336.1
C 1 80 5210 7.92 1766 1661 448.3
C 1 81 5133 7.75 1766 1661 448.3
C 12 241 4635 6.63 1766 1661 448.3
D 15 46 4102 6.39 1590 1455 414.3
D 3 14 3971 6.07 1590 1455 414.3
D 10 189 3870 5.83 1590 1455 414.3

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