ASTROSAT CZTI

Data Quality Report

Orbit 11902

Creation date: 2024-06-27T16:19:45.801253
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_130T01_9000001762_11902cztM0_level2.evt modeM0/AS1A04_130T01_9000001762_11902cztM0_level2_quad_clean.evt
Size (bytes)408,631,68057,168,000
Size389.7 MB 54.5 MB
Events in quadrant A2,708,283350,014
Events in quadrant B3,193,823331,737
Events in quadrant C2,286,379357,884
Events in quadrant D3,840,053333,303

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113421
B0128831
C0105091
D0146581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51001152.254902%
B51003516.882353%
C5100360.705882%
D51002905.686275%

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 5601 5102 13 13 0.23% 0.25%
B 5601 5102 204 204 3.64% 4.00%
C 5601 5102 0 0 0.00% 0.00%
D 5601 5102 213 213 3.80% 4.17%

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 14 63 104291 836.42 601 589 124.0
A 8 15 87638 702.1 601 589 124.0
A 1 162 79845 639.25 601 589 124.0
B 4 239 455205 3950.67 583 568 115.1
B 3 64 380751 3303.69 583 568 115.1
B 15 204 35761 305.82 583 568 115.1
C 13 61 4196 26.32 585 588 137.1
C 14 234 2004 10.33 585 588 137.1
C 12 4 1635 7.64 585 588 137.1
D 1 52 1156138 7970.88 572 558 145.0
D 8 195 356568 2455.66 572 558 145.0
D 10 50 33018 223.9 572 558 145.0

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