ASTROSAT CZTI

Data Quality Report

Orbit 55400

Creation date: 2025-12-24T19:27:57.174916
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_099T01_9000006536_55400cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55400cztM0_level2_quad_clean.evt
Size (bytes)443,905,92085,582,080
Size423.3 MB 81.6 MB
Events in quadrant A2,885,315583,090
Events in quadrant B2,906,328622,035
Events in quadrant C2,834,314544,723
Events in quadrant D7,343,939426,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130571
B0125311
C0129961
D0258684

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59371242.088597%
B5937861.448543%
C59381121.886157%
D5936142624.022911%

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 6967 5938 33 33 0.47% 0.56%
B 6967 5938 6 6 0.09% 0.10%
C 6968 5939 36 36 0.52% 0.61%
D 6968 5938 1471 1471 21.11% 24.77%

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 217372 1370.03 634 620 158.2
A 3 62 76381 478.87 634 620 158.2
A 4 3 44111 274.89 634 620 158.2
B 5 172 265240 1966.42 622 598 134.6
B 5 236 116967 864.68 622 598 134.6
B 10 247 37109 271.29 622 598 134.6
C 12 249 151501 901.05 608 602 167.5
C 13 3 149077 886.58 608 602 167.5
C 12 2 95249 565.16 608 602 167.5
D 11 129 4554489 27769.85 569 545 164.0
D 8 160 209247 1272.66 569 545 164.0
D 11 176 86617 524.87 569 545 164.0

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