ASTROSAT CZTI

Data Quality Report

Orbit 59078

Creation date: 2026-08-29T05:12:54.827309
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_59078cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59078cztM0_level2_quad_clean.evt
Size (bytes)733,749,12079,562,880
Size699.8 MB 75.9 MB
Events in quadrant A3,765,143628,406
Events in quadrant B3,090,178694,958
Events in quadrant C2,907,894623,478
Events in quadrant D16,902,47117,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157422
B0136862
C0132843
D0544632

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63652894.540456%
B6366661.036758%
C6365100.157109%
D6365622297.753339%

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 7565 6366 223 223 2.95% 3.50%
B 7566 6367 35 35 0.46% 0.55%
C 7565 6366 7 7 0.09% 0.11%
D 7564 6364 6176 6176 81.65% 97.05%

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 13 248 659178 3820.25 698 681 172.4
A 8 206 173681 1003.65 698 681 172.4
A 0 24 94124 542.11 698 681 172.4
B 5 185 175037 1167.48 704 678 149.3
B 4 236 42681 281.25 704 678 149.3
B 4 171 33508 219.83 704 678 149.3
C 12 252 61293 315.42 696 689 192.1
C 6 223 37684 192.54 696 689 192.1
C 14 254 26903 136.43 696 689 192.1
D 12 1 12398334 295695.23 141 134 41.9
D 2 62 3674819 87640.69 141 134 41.9
D 5 38 119726 2852.25 141 134 41.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct