ASTROSAT CZTI

Data Quality Report

Orbit 04009

Creation date: 2024-06-27T14:36:16.175099
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/AS1G05_247T01_9000000512_04009cztM0_level2.evt modeM0/AS1G05_247T01_9000000512_04009cztM0_level2_quad_clean.evt
Size (bytes)1,303,421,760301,654,080
Size1.2 GB 287.7 MB
Events in quadrant A8,972,4962,007,701
Events in quadrant B8,598,1532,012,156
Events in quadrant C8,052,9871,964,473
Events in quadrant D12,589,7631,867,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400993
B0385793
C0379063
D0511863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186412601.394775%
B18641970.520358%
C18641600.321871%
D186416943.722976%

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 22156 18644 98 98 0.44% 0.53%
B 22156 18644 2 2 0.01% 0.01%
C 22156 18644 4 4 0.02% 0.02%
D 22156 18644 714 714 3.22% 3.83%

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 0 50 552439 1308.81 2088 2045 420.5
A 0 118 215628 507.89 2088 2045 420.5
A 3 1 76903 178.01 2088 2045 420.5
B 15 204 169604 427.64 2119 2075 391.8
B 14 167 49704 121.58 2119 2075 391.8
B 10 16 37892 91.43 2119 2075 391.8
C 9 144 73437 153.91 2027 2038 463.9
C 12 4 30678 61.74 2027 2038 463.9
C 13 61 17357 33.02 2027 2038 463.9
D 9 82 2748273 5824.08 1986 1931 471.5
D 8 112 807011 1707.31 1986 1931 471.5
D 10 246 774948 1639.31 1986 1931 471.5

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