ASTROSAT CZTI

Data Quality Report

Orbit 58951

Creation date: 2026-08-21T12:19:48.627729
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_004T07_9000006598_58951cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58951cztM0_level2_quad_clean.evt
Size (bytes)1,434,579,840135,616,320
Size1.3 GB 129.3 MB
Events in quadrant A16,983,786728,428
Events in quadrant B11,081,997980,102
Events in quadrant C5,959,6131,061,227
Events in quadrant D18,206,304554,448

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581462
B0405162
C0255902
D0616982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11290432238.281665%
B11290233520.682019%
C112901701.505757%
D11290534647.351639%

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 13219 11289 4027 4027 30.46% 35.67%
B 13220 11290 1858 1858 14.05% 16.46%
C 13220 11291 88 88 0.67% 0.78%
D 13220 11290 5264 5264 39.82% 46.63%

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 14 238 10937652 43345.7 1027 1000 252.3
A 10 251 1636083 6480.39 1027 1000 252.3
A 15 233 191958 756.83 1027 1000 252.3
B 4 171 2606273 10632.7 1148 1103 245.0
B 2 249 1296142 5285.55 1148 1103 245.0
B 6 255 611259 2490.28 1148 1103 245.0
C 15 208 313318 927.2 1231 1217 336.6
C 12 252 306918 908.18 1231 1217 336.6
C 3 233 146938 432.91 1231 1217 336.6
D 12 110 9460696 33027.3 1011 964 286.4
D 11 129 2597754 9066.32 1011 964 286.4
D 14 49 1064924 3714.66 1011 964 286.4

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