ASTROSAT CZTI

Data Quality Report

Orbit 52906

Creation date: 2025-07-16T19:16:39.657724
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/AS1C09_011T06_9000006484_52906cztM0_level2.fits modeM0/AS1C09_011T06_9000006484_52906cztM0_level2_quad_clean.evt
Size (bytes)764,455,68066,686,400
Size729.0 MB 63.6 MB
Events in quadrant A14,585,62219,993
Events in quadrant B4,239,931574,113
Events in quadrant C3,669,916519,081
Events in quadrant D5,339,189489,762

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472591
B0167646
C0152071
D0199871

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5960582497.718121%
B59594347.283101%
C59592954.950495%
D59595519.246518%

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 6860 5961 5474 5474 79.80% 91.83%
B 6859 5960 303 303 4.42% 5.08%
C 6859 5960 157 157 2.29% 2.63%
D 6859 5960 501 501 7.30% 8.41%

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 13170595 221467.76 232 227 59.5
A 12 17 212875 3575.81 232 227 59.5
A 3 62 108164 1815.03 232 227 59.5
B 8 128 811253 6310.93 605 584 128.5
B 4 158 520786 4049.69 605 584 128.5
B 12 32 69404 535.75 605 584 128.5
C 2 12 438549 2636.17 602 594 166.1
C 7 80 302773 1818.9 602 594 166.1
C 15 224 125368 751.05 602 594 166.1
D 8 176 1194543 6949.01 600 573 171.8
D 15 125 676453 3933.68 600 573 171.8
D 2 249 197366 1145.35 600 573 171.8

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