ASTROSAT CZTI

Data Quality Report

Orbit 53981

Creation date: 2025-09-20T14:05:59.370673
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_53981cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53981cztM0_level2_quad_clean.evt
Size (bytes)720,800,64084,576,960
Size687.4 MB 80.7 MB
Events in quadrant A3,972,993621,351
Events in quadrant B3,897,599662,570
Events in quadrant C7,893,002476,303
Events in quadrant D10,402,976337,155

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168702
B0165302
C0279932
D0355632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66412583.884957%
B66413945.932841%
C6641167925.282337%
D6641284242.794760%

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 7531 6642 211 211 2.80% 3.18%
B 7531 6642 232 232 3.08% 3.49%
C 7531 6642 1610 1610 21.38% 24.24%
D 7531 6641 2658 2658 35.29% 40.02%

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 15 174 648073 3822.73 684 666 169.4
A 12 115 479021 2824.53 684 666 169.4
A 10 253 35448 205.38 684 666 169.4
B 5 185 732128 5086.79 677 654 143.8
B 0 213 183731 1273.15 677 654 143.8
B 4 81 108390 749.21 677 654 143.8
C 1 241 3681120 22326.25 595 586 164.9
C 12 249 693711 4204.52 595 586 164.9
C 9 38 671284 4068.48 595 586 164.9
D 8 176 7567823 52779.35 494 469 143.4
D 6 239 277271 1930.59 494 469 143.4
D 2 172 258680 1800.92 494 469 143.4

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