ASTROSAT CZTI

Data Quality Report

Orbit 58688

Creation date: 2026-08-03T13:34:04.643747
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_004T06_9000006594_58688cztM0_level2.fits modeM0/AS1A14_004T06_9000006594_58688cztM0_level2_quad_clean.evt
Size (bytes)471,464,64081,993,600
Size449.6 MB 78.2 MB
Events in quadrant A2,741,405576,144
Events in quadrant B5,505,832504,175
Events in quadrant C3,961,778523,438
Events in quadrant D4,797,049477,748

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122841
B0203257
C0159602
D0181531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733570.994244%
B5732117020.411724%
C57324537.903001%
D573260010.467551%

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 6920 5796 11 11 0.16% 0.19%
B 6919 5795 987 987 14.27% 17.03%
C 6919 5795 311 311 4.49% 5.37%
D 6919 5795 453 453 6.55% 7.82%

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 10 251 108859 683.18 639 621 158.4
A 4 95 84231 527.73 639 621 158.4
A 3 14 59293 370.33 639 621 158.4
B 15 32 1686659 13386.3 582 560 126.0
B 2 249 1140135 9047.33 582 560 126.0
B 5 172 146321 1157.23 582 560 126.0
C 13 3 1362454 8141.11 607 601 167.3
C 14 254 114721 682.21 607 601 167.3
C 12 252 41502 244.5 607 601 167.3
D 2 249 919087 5412.22 596 571 169.7
D 8 240 793318 4671.15 596 571 169.7
D 7 222 152433 894.82 596 571 169.7

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