ASTROSAT CZTI

Data Quality Report

Orbit 56054

Creation date: 2026-02-06T20:15:35.897482
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_083T03_9000006548_56054cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56054cztM0_level2_quad_clean.evt
Size (bytes)605,545,92073,537,920
Size577.5 MB 70.1 MB
Events in quadrant A11,110,341231,793
Events in quadrant B3,201,463589,406
Events in quadrant C3,190,436523,213
Events in quadrant D4,459,468474,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369861
B0136221
C0138191
D0172371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5833371863.740785%
B58331492.554432%
C58331502.571576%
D58334056.943254%

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 6844 5833 3277 3277 47.88% 56.18%
B 6844 5833 72 72 1.05% 1.23%
C 6844 5834 101 101 1.48% 1.73%
D 6844 5833 362 362 5.29% 6.21%

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 4 249 8382661 78609.18 425 412 106.6
A 12 115 992901 9307.62 425 412 106.6
A 0 8 32297 299.02 425 412 106.6
B 5 185 361413 2778.34 610 589 129.9
B 0 213 145804 1118.15 610 589 129.9
B 5 172 121271 929.25 610 589 129.9
C 13 3 325924 2000.21 593 586 162.7
C 15 147 255136 1565.0 593 586 162.7
C 15 230 149973 918.45 593 586 162.7
D 6 42 985457 5988.77 584 559 164.5
D 11 129 385181 2338.73 584 559 164.5
D 14 52 193290 1171.92 584 559 164.5

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