ASTROSAT CZTI

Data Quality Report

Orbit 40161

Creation date: 2024-06-27T22:13:18.963595
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/AS1A12_068T01_9000005526_40161cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40161cztM0_level2_quad_clean.evt
Size (bytes)182,862,72020,721,600
Size174.4 MB 19.8 MB
Events in quadrant A856,516172,080
Events in quadrant B696,161180,428
Events in quadrant C3,994,2882,715
Events in quadrant D1,096,447155,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034712
B031801
C0129451
D043641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157760.380469%
B157720.126823%
C1577155998.858592%
D1577523.297400%

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 2948 1576 2 2 0.07% 0.13%
B 2949 1578 0 0 0.00% 0.00%
C 2948 1576 1536 1536 52.10% 97.46%
D 2948 1576 63 63 2.14% 4.00%

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 173936 4639.16 172 169 37.5
A 2 79 13929 367.36 172 169 37.5
A 3 137 1946 47.44 172 169 37.5
B 5 172 6475 172.31 172 167 36.6
B 0 190 6350 168.9 172 167 36.6
B 12 111 4497 118.28 172 167 36.6
C 9 187 3675089 194347.0 71 71 18.9
C 15 214 31020 1636.68 71 71 18.9
C 9 203 3958 205.56 71 71 18.9
D 13 249 216753 5090.77 165 159 42.5
D 12 0 138903 3261.0 165 159 42.5
D 2 250 45805 1072.85 165 159 42.5

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