ASTROSAT CZTI

Data Quality Report

Orbit 57321

Creation date: 2026-05-03T02:09:01.537065
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_049T03_9000006570_57321cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57321cztM0_level2_quad_clean.evt
Size (bytes)549,239,04091,624,320
Size523.8 MB 87.4 MB
Events in quadrant A3,192,638641,869
Events in quadrant B3,433,846678,756
Events in quadrant C4,783,617581,506
Events in quadrant D8,434,712435,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01391247
B01444859
C01878390
D02943980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0141
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6264370.590677%
B62601221.948882%
C62613034.839483%
D6262184729.495369%

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 7508 6276 22 22 0.29% 0.35%
B 7508 6273 69 69 0.92% 1.10%
C 7508 6272 302 302 4.02% 4.82%
D 7507 6275 1775 1775 23.64% 28.29%

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 0 12 440564 2527.85 698 680 174.0
A 3 245 19565 108.52 698 680 174.0
A 8 4 11039 59.53 698 680 174.0
B 5 185 353310 2412.86 686 662 146.2
B 2 249 89167 605.56 686 662 146.2
B 7 252 72672 492.7 686 662 146.2
C 15 224 1607006 9027.8 650 644 177.9
C 14 254 293069 1643.44 650 644 177.9
C 6 223 123990 693.21 650 644 177.9
D 3 224 5484266 32745.15 584 558 167.5
D 2 249 445900 2659.29 584 558 167.5
D 2 31 68854 407.82 584 558 167.5

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