ASTROSAT CZTI

Data Quality Report

Orbit 14874

Creation date: 2024-06-27T17:00:42.326783
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/AS1A04_148T02_9000002198_14874cztM0_level2.evt modeM0/AS1A04_148T02_9000002198_14874cztM0_level2_quad_clean.evt
Size (bytes)444,744,000101,422,080
Size424.1 MB 96.7 MB
Events in quadrant A3,146,047662,169
Events in quadrant B3,288,494657,823
Events in quadrant C3,113,095642,271
Events in quadrant D3,461,217637,401

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138633
B0143242
C0137982
D0153442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776170.250885%
B6776520.767414%
C6776120.177096%
D6776190.280401%

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 7722 6779 0 0 0.00% 0.00%
B 7722 6779 12 12 0.16% 0.18%
C 7722 6779 0 0 0.00% 0.00%
D 7722 6779 2 2 0.03% 0.03%

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 12 189 107907 670.08 785 768 159.9
A 15 239 11219 65.36 785 768 159.9
A 0 226 6863 38.12 785 768 159.9
B 4 173 97329 638.88 784 764 151.1
B 3 64 43864 285.15 784 764 151.1
B 0 189 27559 177.28 784 764 151.1
C 3 233 150314 849.67 759 761 176.0
C 13 61 5490 26.87 759 761 176.0
C 8 222 2467 9.69 759 761 176.0
D 13 104 534053 2702.13 753 735 197.4
D 2 234 25403 124.98 753 735 197.4
D 2 120 21805 106.75 753 735 197.4

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