ASTROSAT CZTI

Data Quality Report

Orbit 52988

Creation date: 2025-07-15T12:10:53.830996
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/AS1A13_003T01_9000006486_52988cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52988cztM0_level2_quad_clean.evt
Size (bytes)859,872,96077,068,800
Size820.0 MB 73.5 MB
Events in quadrant A14,925,860143,621
Events in quadrant B3,054,291687,086
Events in quadrant C5,149,370576,626
Events in quadrant D8,192,923468,961

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0487691
B0140281
C0198841
D0288911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552526480.341880%
B6552711.083639%
C65524286.532357%
D6552146022.283272%

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 7532 6553 4704 4704 62.45% 71.78%
B 7532 6553 15 15 0.20% 0.23%
C 7532 6553 383 383 5.08% 5.84%
D 7532 6553 1308 1308 17.37% 19.96%

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 9 191 11956987 113436.04 409 400 105.4
A 4 249 629063 5964.33 409 400 105.4
A 15 190 518120 4911.78 409 400 105.4
B 10 254 96539 644.53 684 658 148.8
B 10 63 81135 540.98 684 658 148.8
B 1 255 52368 347.6 684 658 148.8
C 1 241 479953 2650.03 647 640 180.9
C 15 234 454123 2507.22 647 640 180.9
C 9 38 411968 2274.16 647 640 180.9
D 0 5 2228218 12807.94 600 572 173.9
D 8 176 1740274 10002.48 600 572 173.9
D 2 62 486388 2793.22 600 572 173.9

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