ASTROSAT CZTI

Data Quality Report

Orbit 02501

Creation date: 2024-06-27T14:18:43.668533
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/AS1T01_046T01_9000000372_02501cztM0_level2.fits modeM0/AS1T01_046T01_9000000372_02501cztM0_level2_quad_clean.evt
Size (bytes)340,894,080109,872,000
Size325.1 MB 104.8 MB
Events in quadrant A2,869,384729,583
Events in quadrant B2,968,571753,914
Events in quadrant C2,920,894721,204
Events in quadrant D3,336,694653,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013713105
B013874109
C013834121
D015398114

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01382
D01382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714160.238308%
B6711260.387424%
C6706200.298240%
D67101672.488823%

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 7841 6735 0 0 0.00% 0.00%
B 7841 6732 2 2 0.03% 0.03%
C 7841 6726 2 2 0.03% 0.03%
D 7841 6727 95 95 1.21% 1.41%

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 8 15 11281 69.41 742 726 152.1
A 12 194 8408 50.52 742 726 152.1
A 0 226 7994 47.8 742 726 152.1
B 10 244 20012 132.84 760 742 145.1
B 12 111 10680 68.51 760 742 145.1
B 11 111 8940 56.51 760 742 145.1
C 14 223 36291 208.51 728 731 170.5
C 12 4 17387 97.66 728 731 170.5
C 10 82 13764 76.42 728 731 170.5
D 11 130 339785 2015.08 705 687 168.3
D 12 110 72087 424.29 705 687 168.3
D 13 53 66247 389.59 705 687 168.3

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