ASTROSAT CZTI

Data Quality Report

Orbit 22125

Creation date: 2024-06-27T18:36:54.927845
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/AS1A07_007T04_9000003276_22125cztM0_level2.evt modeM0/AS1A07_007T04_9000003276_22125cztM0_level2_quad_clean.evt
Size (bytes)878,497,920172,200,960
Size837.8 MB 164.2 MB
Events in quadrant A5,816,9181,106,995
Events in quadrant B6,195,0501,110,264
Events in quadrant C5,923,9171,076,342
Events in quadrant D7,806,2981,040,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260436
B0269313
C0260583
D0321673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12748470.368685%
B127501140.894118%
C12749930.729469%
D127505164.047059%

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 14109 12751 0 0 0.00% 0.00%
B 14110 12752 42 42 0.30% 0.33%
C 14110 12752 0 0 0.00% 0.00%
D 14110 12752 468 468 3.32% 3.67%

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 13 254 24968 77.74 1504 1469 302.3
A 3 137 13142 38.62 1504 1469 302.3
A 0 226 12945 37.97 1504 1469 302.3
B 3 64 224458 784.75 1496 1458 284.2
B 0 190 46639 158.99 1496 1458 284.2
B 12 111 34694 116.96 1496 1458 284.2
C 14 238 226213 657.4 1453 1461 341.9
C 10 22 27961 77.51 1453 1461 341.9
C 13 61 10083 25.22 1453 1461 341.9
D 1 52 1187366 3413.49 1439 1399 347.4
D 5 222 566633 1626.87 1439 1399 347.4
D 11 176 238732 683.1 1439 1399 347.4

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