ASTROSAT CZTI

Data Quality Report

Orbit 59400

Creation date: 2026-09-19T21:23:19.024156
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_033T01_9000006608_59400cztM0_level2.fits modeM0/AS1A14_033T01_9000006608_59400cztM0_level2_quad_clean.evt
Size (bytes)416,021,760103,060,800
Size396.7 MB 98.3 MB
Events in quadrant A3,435,733674,137
Events in quadrant B3,292,992733,807
Events in quadrant C3,482,860653,620
Events in quadrant D4,669,969595,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148672
B0142352
C0150632
D0183082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66592163.243730%
B66602133.198198%
C66602033.048048%
D66603335.000000%

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 8954 6661 22 22 0.25% 0.33%
B 8955 6662 2 2 0.02% 0.03%
C 8955 6662 67 67 0.75% 1.01%
D 8955 6662 195 195 2.18% 2.93%

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 15 233 184794 963.75 782 763 191.0
A 14 238 133638 695.85 782 763 191.0
A 10 251 37832 194.13 782 763 191.0
B 0 157 47080 279.96 774 744 165.5
B 5 185 36851 218.15 774 744 165.5
B 4 236 31782 187.53 774 744 165.5
C 15 208 212089 1009.38 770 762 209.4
C 6 223 109387 518.83 770 762 209.4
C 14 96 109342 518.62 770 762 209.4
D 12 110 1427659 6651.05 762 726 214.5
D 2 31 110026 509.46 762 726 214.5
D 11 129 43711 200.36 762 726 214.5

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