ASTROSAT CZTI

Data Quality Report

Orbit 55557

Creation date: 2026-01-04T09:51:49.030599
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_021T06_9000006538_55557cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55557cztM0_level2_quad_clean.evt
Size (bytes)600,390,720149,872,320
Size572.6 MB 142.9 MB
Events in quadrant A5,169,822959,636
Events in quadrant B4,709,0881,046,393
Events in quadrant C6,447,989910,797
Events in quadrant D5,064,056878,080

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237352
B0224582
C0265903
D0234392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107311451.351225%
B10731700.652316%
C107313002.795639%
D10731930.866648%

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 12116 10733 104 104 0.86% 0.97%
B 12116 10733 40 40 0.33% 0.37%
C 12116 10732 280 280 2.31% 2.61%
D 12116 10733 100 100 0.83% 0.93%

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 4 159 699641 2594.35 1085 1058 269.3
A 0 8 120299 442.83 1085 1058 269.3
A 8 6 40361 145.96 1085 1058 269.3
B 4 169 180244 781.79 1077 1038 229.2
B 10 245 68102 292.57 1077 1038 229.2
B 10 247 50602 216.22 1077 1038 229.2
C 13 3 888133 3097.64 1045 1036 286.4
C 9 38 717060 2500.27 1045 1036 286.4
C 1 16 264273 919.19 1045 1036 286.4
D 8 245 240006 802.95 1050 1002 297.7
D 11 129 199428 666.62 1050 1002 297.7
D 2 172 131020 436.8 1050 1002 297.7

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