ASTROSAT CZTI

Data Quality Report

Orbit 58960

Creation date: 2026-08-21T11:22:22.957838
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_58960cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58960cztM0_level2_quad_clean.evt
Size (bytes)526,783,680101,966,400
Size502.4 MB 97.2 MB
Events in quadrant A4,044,415691,031
Events in quadrant B6,057,660649,324
Events in quadrant C4,081,700657,407
Events in quadrant D4,770,054599,533

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167962
B0228772
C0170192
D0191042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7033851.208588%
B703495913.633779%
C70341001.421666%
D70343344.748365%

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 8843 7035 33 33 0.37% 0.47%
B 8844 7036 592 592 6.69% 8.41%
C 8844 7036 70 70 0.79% 0.99%
D 8844 7036 302 302 3.41% 4.29%

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 678231 3535.76 779 761 191.6
A 15 233 222026 1154.8 779 761 191.6
A 13 248 53306 274.24 779 761 191.6
B 6 255 1324196 8610.41 720 692 153.7
B 2 249 732133 4758.59 720 692 153.7
B 10 247 385528 2503.65 720 692 153.7
C 12 252 770822 3681.75 761 755 209.2
C 3 233 157899 751.32 761 755 209.2
C 12 249 109042 517.73 761 755 209.2
D 12 110 637561 2975.64 745 711 214.0
D 11 129 534776 2495.39 745 711 214.0
D 7 222 263951 1229.97 745 711 214.0

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