ASTROSAT CZTI

Data Quality Report

Orbit 00708

Creation date: 2024-06-27T14:01:51.225075
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_141T01_9000000104_00708cztM0_level2.evt modeM0/AS1P01_141T01_9000000104_00708cztM0_level2_quad_clean.evt
Size (bytes)919,900,80073,964,160
Size877.3 MB 70.5 MB
Events in quadrant A6,487,531466,184
Events in quadrant B7,153,664476,122
Events in quadrant C7,410,348460,711
Events in quadrant D6,434,183443,041

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02412
B02412
C02412
D02412

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04656423283
B05045425234
C05193425968
D04630723161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228114
B0228114
C0228114
D0228114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5630230.408526%
B5629190.337538%
C5630110.195382%
D5629480.852727%

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 6875 5631 176 176 2.56% 3.13%
B 6875 5631 262 262 3.81% 4.65%
C 6875 5631 240 240 3.49% 4.26%
D 6875 5631 271 271 3.94% 4.81%

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 15 171 107048 265.7 1660 1674 396.6
A 12 251 7298 14.18 1660 1674 396.6
A 11 79 6340 11.77 1660 1674 396.6
B 5 247 286704 698.25 1757 1769 408.1
B 7 221 117275 283.05 1757 1769 408.1
B 5 191 26002 59.38 1757 1769 408.1
C 3 31 266476 607.34 1579 1637 436.1
C 3 15 221437 504.06 1579 1637 436.1
C 3 175 213722 486.36 1579 1637 436.1
D 6 226 398020 859.48 1503 1554 461.3
D 0 25 187666 403.46 1503 1554 461.3
D 1 4 75472 160.24 1503 1554 461.3

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