ASTROSAT CZTI

Data Quality Report

Orbit 59019

Creation date: 2026-08-25T06:11:18.594542
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_59019cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59019cztM0_level2_quad_clean.evt
Size (bytes)816,710,40078,819,840
Size778.9 MB 75.2 MB
Events in quadrant A2,923,377645,645
Events in quadrant B5,719,314604,771
Events in quadrant C13,809,076134,444
Events in quadrant D7,277,912549,467

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134202
B0213602
C0452689
D0262102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479530.818027%
B647993514.431239%
C6478524080.889163%
D64784977.672121%

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 7559 6479 15 15 0.20% 0.23%
B 7559 6479 709 709 9.38% 10.94%
C 7557 6477 5140 5140 68.02% 79.36%
D 7558 6478 545 545 7.21% 8.41%

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 88618 494.3 718 700 177.9
A 0 24 15678 84.21 718 700 177.9
A 13 254 12088 64.03 718 700 177.9
B 2 249 2226111 15601.2 672 646 142.6
B 4 236 278804 1949.97 672 646 142.6
B 0 216 263960 1845.91 672 646 142.6
C 15 219 12110238 114045.63 384 380 106.2
C 12 252 93268 874.78 384 380 106.2
C 14 254 35320 329.05 384 380 106.2
D 12 110 3933594 20005.24 682 651 196.6
D 11 129 227593 1154.36 682 651 196.6
D 12 1 162442 822.96 682 651 196.6

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