ASTROSAT CZTI

Data Quality Report

Orbit 53982

Creation date: 2025-09-20T09:08:48.818338
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_041T01_9000006510_53982cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53982cztM0_level2_quad_clean.evt
Size (bytes)714,055,68093,758,400
Size681.0 MB 89.4 MB
Events in quadrant A3,974,922682,156
Events in quadrant B4,145,748721,961
Events in quadrant C5,919,030589,550
Events in quadrant D11,822,845334,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174702
B0178913
C0227762
D0403102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73351842.508521%
B73343805.181347%
C733488812.107990%
D7334353148.145623%

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 7725 7336 152 152 1.97% 2.07%
B 7724 7335 188 188 2.43% 2.56%
C 7724 7335 824 824 10.67% 11.23%
D 7724 7334 3188 3188 41.27% 43.47%

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 12 115 489688 2584.18 762 742 189.2
A 15 174 314037 1655.83 762 742 189.2
A 4 249 52724 274.74 762 742 189.2
B 5 185 581577 3595.49 753 728 161.5
B 0 213 225002 1388.27 753 728 161.5
B 4 81 155544 958.32 753 728 161.5
C 12 249 1785208 9150.15 709 702 195.0
C 1 241 335175 1715.03 709 702 195.0
C 12 2 247095 1263.39 709 702 195.0
D 8 176 8707766 57993.76 522 498 150.1
D 3 12 436055 2900.98 522 498 150.1
D 6 239 241227 1603.35 522 498 150.1

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