ASTROSAT CZTI

Data Quality Report

Orbit 38890

Creation date: 2024-06-27T21:57:47.266769
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/AS1T05_058T01_9000005414_38890cztM0_level2.fits modeM0/AS1T05_058T01_9000005414_38890cztM0_level2_quad_clean.evt
Size (bytes)1,251,728,640255,240,000
Size1.2 GB 243.4 MB
Events in quadrant A8,478,3881,801,526
Events in quadrant B7,566,9401,836,342
Events in quadrant C8,191,8151,770,290
Events in quadrant D20,833,4861,193,093

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347535
B0334064
C0340734
D0729724

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03340
B03340
C03340
D03340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16333510.312251%
B16333520.318374%
C16333220.134697%
D16333448527.459744%

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 21825 16337 17 17 0.08% 0.10%
B 21825 16337 29 29 0.13% 0.18%
C 21825 16337 20 20 0.09% 0.12%
D 21825 16337 4380 4380 20.07% 26.81%

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 10 83 1129158 3039.58 1839 1798 370.9
A 13 248 189063 504.9 1839 1798 370.9
A 13 254 25091 62.8 1839 1798 370.9
B 5 172 97281 272.5 1826 1774 350.5
B 5 184 65398 181.53 1826 1774 350.5
B 0 230 60812 168.44 1826 1774 350.5
C 15 214 674583 1608.19 1798 1809 418.3
C 14 254 266107 631.77 1798 1809 418.3
C 4 254 214169 507.62 1798 1809 418.3
D 12 227 10813888 27612.11 1607 1565 391.6
D 1 52 1003383 2558.41 1607 1565 391.6
D 2 250 687702 1752.23 1607 1565 391.6

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