ASTROSAT CZTI

Data Quality Report

Orbit 53770

Creation date: 2025-09-06T03:54:05.067151
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_022T04_9000006506_53770cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53770cztM0_level2_quad_clean.evt
Size (bytes)1,980,910,080165,594,240
Size1.8 GB 157.9 MB
Events in quadrant A38,367,39549,111
Events in quadrant B8,874,8791,479,862
Events in quadrant C11,771,0861,285,882
Events in quadrant D13,130,1921,141,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01245223
B0373513
C0457003
D0499463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A153121485997.041536%
B153125153.363375%
C1531210216.667973%
D15311189212.357129%

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 17191 15311 14341 14341 83.42% 93.66%
B 17192 15314 328 328 1.91% 2.14%
C 17192 15315 943 943 5.49% 6.16%
D 17191 15313 1854 1854 10.78% 12.11%

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 3 63 35924289 336788.46 419 407 106.7
A 3 78 466484 4369.5 419 407 106.7
A 0 8 65666 611.81 419 407 106.7
B 6 255 556206 1656.88 1572 1511 334.8
B 7 0 473305 1409.25 1572 1511 334.8
B 5 185 359217 1068.47 1572 1511 334.8
C 15 224 3964368 9318.59 1526 1512 425.3
C 12 2 619241 1452.58 1526 1512 425.3
C 1 241 253535 592.63 1526 1512 425.3
D 1 241 5275007 12666.86 1454 1389 416.3
D 7 70 324576 776.27 1454 1389 416.3
D 2 172 261242 624.15 1454 1389 416.3

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