ASTROSAT CZTI

Data Quality Report

Orbit 53268

Creation date: 2025-08-03T08:03:21.989487
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_011T08_9000006492_53268cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53268cztM0_level2_quad_clean.evt
Size (bytes)643,173,12090,636,480
Size613.4 MB 86.4 MB
Events in quadrant A7,657,262512,425
Events in quadrant B4,597,139662,763
Events in quadrant C6,242,483571,243
Events in quadrant D4,813,294548,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272502
B0182992
C0230652
D0188392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6432147422.916667%
B64323455.363806%
C64326409.950249%
D64324146.436567%

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 7577 6433 1411 1411 18.62% 21.93%
B 7577 6432 172 172 2.27% 2.67%
C 7577 6432 577 577 7.62% 8.97%
D 7577 6433 380 380 5.02% 5.91%

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 62 2844280 18349.48 612 596 155.0
A 3 27 1643544 10601.48 612 596 155.0
A 8 47 159421 1024.85 612 596 155.0
B 10 254 992404 7106.36 663 641 139.6
B 2 249 302736 2164.63 663 641 139.6
B 4 171 278995 1994.51 663 641 139.6
C 15 224 1351569 7560.55 640 632 178.7
C 10 22 644098 3601.17 640 632 178.7
C 0 240 398555 2226.98 640 632 178.7
D 13 170 682471 3691.67 637 606 184.7
D 2 37 553958 2995.89 637 606 184.7
D 12 3 268159 1448.55 637 606 184.7

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