ASTROSAT CZTI

Data Quality Report

Orbit 57365

Creation date: 2026-05-06T00:28:35.125574
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_102T01_9000006572_57365cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57365cztM0_level2_quad_clean.evt
Size (bytes)478,431,36078,076,800
Size456.3 MB 74.5 MB
Events in quadrant A3,022,688531,363
Events in quadrant B2,930,961570,855
Events in quadrant C7,555,314376,104
Events in quadrant D3,733,308465,673

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132751
B0130933
C0267061
D0153349

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6013701.164144%
B6012871.447106%
C6014173928.915863%
D60132073.442541%

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 7453 6293 16 16 0.21% 0.25%
B 7453 6293 33 33 0.44% 0.52%
C 7454 6288 1528 1528 20.50% 24.30%
D 7454 6295 196 196 2.63% 3.11%

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 8 4 149956 909.18 661 644 164.2
A 3 14 118005 714.63 661 644 164.2
A 3 61 81593 492.91 661 644 164.2
B 5 185 245289 1767.67 650 627 138.4
B 0 153 37363 265.42 650 627 138.4
B 7 252 26227 184.96 650 627 138.4
C 15 224 4824480 33201.23 532 526 145.3
C 8 7 260620 1790.12 532 526 145.3
C 12 254 119188 816.7 532 526 145.3
D 2 249 651274 3669.4 625 597 177.3
D 8 240 209617 1178.74 625 597 177.3
D 15 142 173580 975.51 625 597 177.3

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