ASTROSAT CZTI

Data Quality Report

Orbit 59205

Creation date: 2026-09-07T11:49:29.476462
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/AS1T05_271T01_9000006604_59205cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59205cztM0_level2_quad_clean.evt
Size (bytes)618,154,56098,729,280
Size589.5 MB 94.2 MB
Events in quadrant A3,559,304679,217
Events in quadrant B3,626,199710,512
Events in quadrant C5,239,264619,189
Events in quadrant D9,917,589495,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151801
B0156381
C0203291
D0343181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69641061.522114%
B69642293.288340%
C69643785.427915%
D6965168824.235463%

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 7759 6964 25 25 0.32% 0.36%
B 7759 6965 79 79 1.02% 1.13%
C 7759 6965 283 283 3.65% 4.06%
D 7760 6965 1437 1437 18.52% 20.63%

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 234518 1205.35 792 770 193.9
A 0 24 185685 953.54 792 770 193.9
A 3 14 60401 307.49 792 770 193.9
B 4 236 242844 1456.3 771 741 166.2
B 10 247 130990 783.47 771 741 166.2
B 4 201 76039 452.93 771 741 166.2
C 3 233 909827 4428.79 753 745 205.3
C 6 13 527108 2564.29 753 745 205.3
C 15 147 427139 2077.27 753 745 205.3
D 12 110 6342305 30912.48 725 693 205.1
D 11 129 451329 2196.64 725 693 205.1
D 8 240 133289 646.34 725 693 205.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct