ASTROSAT CZTI

Data Quality Report

Orbit 19965

Creation date: 2025-07-03T17:56:00.215801
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/AS1A05_103T05_9000002974_19965cztM0_level2.fits modeM0/AS1A05_103T05_9000002974_19965cztM0_level2_quad_clean.evt
Size (bytes)668,828,160125,861,760
Size637.8 MB 120.0 MB
Events in quadrant A10,235,552615,895
Events in quadrant B4,097,222966,349
Events in quadrant C4,238,487908,530
Events in quadrant D5,564,072763,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359700
B0175340
C0177130
D0222680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8006307638.421184%
B80071361.698514%
C80071812.260522%
D800683410.417187%

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 8691 8006 2340 2340 26.92% 29.23%
B 8692 8008 30 30 0.35% 0.37%
C 8692 8009 74 74 0.85% 0.92%
D 8691 8007 756 756 8.70% 9.44%

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 14 238 7367335 49844.97 733 719 147.8
A 14 254 38297 254.27 733 719 147.8
A 11 29 7789 47.84 733 719 147.8
B 7 220 218684 1201.35 950 923 181.3
B 0 190 33952 182.22 950 923 181.3
B 0 198 29511 157.71 950 923 181.3
C 9 221 414743 1935.06 908 912 213.9
C 14 238 142340 661.31 908 912 213.9
C 3 233 105438 488.76 908 912 213.9
D 1 20 1078163 5196.42 867 843 207.3
D 7 238 742182 3575.83 867 843 207.3
D 12 218 311827 1500.02 867 843 207.3

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