ASTROSAT CZTI

Data Quality Report

Orbit 15868

Creation date: 2024-06-27T17:14:34.085560
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_143T01_9000002344_15868cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15868cztM0_level2_quad_clean.evt
Size (bytes)359,470,08062,239,680
Size342.8 MB 59.4 MB
Events in quadrant A2,535,772382,257
Events in quadrant B2,709,427395,835
Events in quadrant C2,924,296366,171
Events in quadrant D2,352,495365,748

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014032
B013729
C013832
D013937

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145663469
B0149633446
C0155133528
D0142283418

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B033
C022
D021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5352190.355007%
B5377420.781105%
C53341342.512186%
D533820.037467%

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 5823 5486 4 4 0.07% 0.07%
B 5800 5483 2 2 0.03% 0.04%
C 5726 5462 71 71 1.24% 1.30%
D 5797 5466 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 15 239 111188 860.09 630 616 128.6
A 0 226 5680 39.39 630 616 128.6
A 12 194 4678 31.6 630 616 128.6
B 5 65 98190 803.19 633 618 121.5
B 4 216 35149 284.25 633 618 121.5
B 4 48 26958 216.83 633 618 121.5
C 10 22 406083 2838.57 601 606 142.8
C 14 238 91398 635.59 601 606 142.8
C 3 233 60220 417.33 601 606 142.8
D 2 234 20962 132.2 616 598 154.0
D 13 172 8404 50.68 616 598 154.0
D 2 120 6036 35.3 616 598 154.0

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