ASTROSAT CZTI

Data Quality Report

Orbit 00196

Creation date: 2024-06-27T13:57:44.446727
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/AS1P01_140T01_9000000018_00196cztM0_level2.evt modeM0/AS1P01_140T01_9000000018_00196cztM0_level2_quad_clean.evt
Size (bytes)877,584,96073,494,720
Size836.9 MB 70.1 MB
Events in quadrant A7,178,997460,427
Events in quadrant B6,521,430473,379
Events in quadrant C6,033,687463,765
Events in quadrant D6,484,055448,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252042
B0232301
C0217871
D0231171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5409310.573119%
B540930.055463%
C540930.055463%
D5409220.406730%

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 7031 5411 266 266 3.78% 4.92%
B 7031 5411 92 92 1.31% 1.70%
C 7031 5411 45 45 0.64% 0.83%
D 7031 5411 136 136 1.93% 2.51%

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 13 145 437143 1162.01 1704 1692 374.7
A 13 17 80522 210.36 1704 1692 374.7
A 11 242 25713 64.1 1704 1692 374.7
B 0 247 23876 56.07 1671 1682 395.8
B 0 183 23804 55.89 1671 1682 395.8
B 8 5 18972 43.68 1671 1682 395.8
C 1 192 38735 87.77 1513 1568 423.5
C 10 33 13063 27.14 1513 1568 423.5
C 9 128 8295 15.88 1513 1568 423.5
D 10 182 128711 269.33 1538 1592 472.0
D 1 4 72659 150.57 1538 1592 472.0
D 9 51 71609 148.34 1538 1592 472.0

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