ASTROSAT CZTI

Data Quality Report

Orbit 58933

Creation date: 2026-08-19T11:28:26.741132
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_58933cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58933cztM0_level2_quad_clean.evt
Size (bytes)795,991,68083,753,280
Size759.1 MB 79.9 MB
Events in quadrant A11,724,259304,914
Events in quadrant B4,210,671699,228
Events in quadrant C5,453,218598,208
Events in quadrant D7,573,757480,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0392275
B0167982
C0206702
D0269382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6498373157.417667%
B64983275.032318%
C64985848.987381%
D6498143122.022161%

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 7677 6497 3433 3433 44.72% 52.84%
B 7678 6499 184 184 2.40% 2.83%
C 7678 6499 491 491 6.39% 7.56%
D 7678 6498 1350 1350 17.58% 20.78%

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 8400699 65875.73 518 505 127.5
A 15 233 1115881 8746.97 518 505 127.5
A 3 14 64964 505.5 518 505 127.5
B 4 171 588388 3748.12 732 705 156.8
B 4 236 382462 2434.77 732 705 156.8
B 5 185 124879 791.96 732 705 156.8
C 4 5 1929319 10092.57 694 688 191.1
C 12 252 486067 2540.0 694 688 191.1
C 15 208 173447 904.05 694 688 191.1
D 12 110 3718829 19600.88 662 632 189.7
D 11 129 649975 3423.08 662 632 189.7
D 13 138 136493 716.21 662 632 189.7

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