ASTROSAT CZTI

Data Quality Report

Orbit 54252

Creation date: 2025-10-09T15:14:21.361362
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_004T08_9000006514_54252cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54252cztM0_level2_quad_clean.evt
Size (bytes)732,041,28076,155,840
Size698.1 MB 72.6 MB
Events in quadrant A7,116,871485,640
Events in quadrant B3,597,985646,210
Events in quadrant C6,200,377473,189
Events in quadrant D9,684,002253,006

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257141
B0149571
C0230461
D0331592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416137921.493142%
B64161512.353491%
C6416122219.046135%
D6415368157.381138%

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 7446 6416 1162 1162 15.61% 18.11%
B 7446 6417 91 91 1.22% 1.42%
C 7446 6417 1123 1123 15.08% 17.50%
D 7445 6416 2301 2301 30.91% 35.86%

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 7 29 3969062 27201.78 586 571 145.9
A 13 248 677529 4640.17 586 571 145.9
A 15 174 37192 251.02 586 571 145.9
B 0 213 368352 2592.97 661 639 141.8
B 7 0 312442 2198.71 661 639 141.8
B 8 234 92402 647.08 661 639 141.8
C 1 241 3195998 20044.47 579 574 159.4
C 14 254 305502 1912.77 579 574 159.4
C 1 29 246274 1541.24 579 574 159.4
D 8 176 7628685 70318.14 376 359 108.5
D 13 170 184425 1696.73 376 359 108.5
D 12 3 164878 1516.54 376 359 108.5

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