ASTROSAT CZTI

Data Quality Report

Orbit 32157

Creation date: 2024-06-27T20:37:06.924376
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/AS1A09_131T01_9000004690_32157cztM0_level2.evt modeM0/AS1A09_131T01_9000004690_32157cztM0_level2_quad_clean.evt
Size (bytes)1,149,526,080183,669,120
Size1.1 GB 175.2 MB
Events in quadrant A6,078,4431,201,944
Events in quadrant B10,811,5461,183,134
Events in quadrant C6,304,7831,181,356
Events in quadrant D10,761,3971,116,748

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261632
B0414284
C0264132
D0408222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12724970.762339%
B127235844.590112%
C127232752.161440%
D127237025.517567%

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 13884 12726 7 7 0.05% 0.06%
B 13883 12725 236 236 1.70% 1.85%
C 13883 12725 10 10 0.07% 0.08%
D 13883 12725 520 520 3.75% 4.09%

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 12 189 114080 368.14 1530 1495 305.8
A 15 174 31227 97.22 1530 1495 305.8
A 13 6 29890 92.85 1530 1495 305.8
B 6 159 3569881 12636.0 1491 1452 282.4
B 5 172 866070 3061.66 1491 1452 282.4
B 0 190 300691 1059.62 1491 1452 282.4
C 14 238 266367 776.96 1465 1469 340.9
C 0 10 132263 383.63 1465 1469 340.9
C 3 233 62019 177.6 1465 1469 340.9
D 8 195 3434513 10113.61 1451 1410 339.5
D 12 233 1335121 3928.99 1451 1410 339.5
D 2 250 377074 1106.67 1451 1410 339.5

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