ASTROSAT CZTI

Data Quality Report

Orbit 57119

Creation date: 2026-04-19T12:00:09.342867
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_083T10_9000006566_57119cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57119cztM0_level2_quad_clean.evt
Size (bytes)568,169,28091,275,840
Size541.8 MB 87.0 MB
Events in quadrant A3,101,663654,607
Events in quadrant B3,360,439703,332
Events in quadrant C7,136,731425,243
Events in quadrant D6,911,188513,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141842
B0145902
C0258632
D0251582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706891.327170%
B67061372.042947%
C6706225233.581867%
D670592613.810589%

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 7731 6706 24 24 0.31% 0.36%
B 7731 6707 23 23 0.30% 0.34%
C 7731 6707 1789 1789 23.14% 26.67%
D 7730 6706 928 928 12.01% 13.84%

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 119465 659.6 735 716 180.0
A 3 14 96621 532.71 735 716 180.0
A 8 28 14849 78.5 735 716 180.0
B 10 16 90650 573.15 730 701 156.9
B 10 247 81375 514.05 730 701 156.9
B 4 171 68375 431.21 730 701 156.9
C 15 198 4609688 29982.42 571 566 153.7
C 13 3 58057 373.98 571 566 153.7
C 12 252 57314 369.15 571 566 153.7
D 15 142 3336739 17479.82 677 648 190.9
D 12 33 305597 1597.81 677 648 190.9
D 2 249 154294 805.05 677 648 190.9

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