ASTROSAT CZTI

Data Quality Report

Orbit 54370

Creation date: 2025-10-17T10:36:05.722234
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/AS1A14_126T15_9000006516_54370cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54370cztM0_level2_quad_clean.evt
Size (bytes)581,299,20076,824,000
Size554.4 MB 73.3 MB
Events in quadrant A2,617,980563,599
Events in quadrant B3,715,036568,221
Events in quadrant C6,438,722429,256
Events in quadrant D8,300,282363,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121652
B0151501
C0231771
D0287381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5739290.505315%
B57404197.299652%
C5740129522.560976%
D5740173630.243902%

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 6909 5740 12 12 0.17% 0.21%
B 6910 5741 259 259 3.75% 4.51%
C 6910 5741 1169 1169 16.92% 20.36%
D 6910 5741 1671 1671 24.18% 29.11%

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 12 115 103891 694.62 601 585 148.7
A 0 8 47356 314.48 601 585 148.7
A 3 14 47165 313.2 601 585 148.7
B 10 14 1026933 8396.88 577 559 122.2
B 7 0 167179 1363.14 577 559 122.2
B 10 247 82042 666.62 577 559 122.2
C 1 241 2444392 16877.42 523 519 144.8
C 1 29 1316391 9087.43 523 519 144.8
C 14 254 179499 1236.04 523 519 144.8
D 8 176 5961012 42144.41 489 465 141.4
D 3 144 209364 1477.03 489 465 141.4
D 10 181 62119 435.93 489 465 141.4

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