ASTROSAT CZTI

Data Quality Report

Orbit 59118

Creation date: 2026-08-31T23:23:28.285370
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_59118cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59118cztM0_level2_quad_clean.evt
Size (bytes)887,002,56078,710,400
Size845.9 MB 75.1 MB
Events in quadrant A7,369,942513,810
Events in quadrant B3,493,257682,384
Events in quadrant C6,795,661577,239
Events in quadrant D14,657,933143,953

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265241
B0150811
C0249011
D0481146

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682145921.834780%
B66831412.109831%
C66835498.214874%
D6682519677.761149%

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 7567 6683 1275 1275 16.85% 19.08%
B 7568 6684 71 71 0.94% 1.06%
C 7568 6684 353 353 4.66% 5.28%
D 7567 6682 4467 4467 59.03% 66.85%

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 14 3941652 23700.53 663 646 166.3
A 13 248 433552 2603.42 663 646 166.3
A 15 248 211481 1267.93 663 646 166.3
B 10 247 144980 949.42 717 692 152.0
B 4 236 112188 733.65 717 692 152.0
B 6 255 96619 631.2 717 692 152.0
C 3 233 2907800 15325.53 686 679 189.7
C 12 252 257743 1355.17 686 679 189.7
C 5 250 257115 1351.86 686 679 189.7
D 12 1 8636699 85289.29 348 332 101.3
D 12 110 4054876 40041.05 348 332 101.3
D 2 249 153085 1508.53 348 332 101.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct