ASTROSAT CZTI

Data Quality Report

Orbit 59064

Creation date: 2026-08-28T07:14:43.429813
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_004T02_9000006600_59064cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59064cztM0_level2_quad_clean.evt
Size (bytes)945,028,80072,218,880
Size901.2 MB 68.9 MB
Events in quadrant A2,957,193659,256
Events in quadrant B3,869,716686,681
Events in quadrant C11,187,165392,280
Events in quadrant D16,471,6271,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133832
B0159682
C0376553
D0532342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6408400.624220%
B64083084.806492%
C6407275643.015452%
D6407639999.875137%

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 7598 6409 12 12 0.16% 0.19%
B 7598 6409 218 218 2.87% 3.40%
C 7597 6408 2573 2573 33.87% 40.15%
D 7596 6406 6282 6282 82.70% 98.06%

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 3 245 49009 271.45 722 704 178.0
A 3 14 31912 175.37 722 704 178.0
A 4 3 18314 98.96 722 704 178.0
B 5 185 691835 4615.2 708 682 149.8
B 0 213 202114 1345.07 708 682 149.8
B 4 171 42138 276.82 708 682 149.8
C 15 219 8553210 52423.93 594 589 163.1
C 6 223 90484 551.02 594 589 163.1
C 12 252 66982 406.96 594 589 163.1
D 12 1 15847901 592329.79 86 81 26.8
D 2 62 187220 6994.53 86 81 26.8
D 6 239 33099 1234.08 86 81 26.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct