ASTROSAT CZTI

Data Quality Report

Orbit 27685

Creation date: 2024-06-27T19:43:04.376203
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/AS1A09_038T39_9000003984_27685cztM0_level2.evt modeM0/AS1A09_038T39_9000003984_27685cztM0_level2_quad_clean.evt
Size (bytes)146,802,24030,968,640
Size140.0 MB 29.5 MB
Events in quadrant A810,172213,814
Events in quadrant B975,964216,037
Events in quadrant C793,489206,262
Events in quadrant D1,761,213189,333

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032920
B038940
C032660
D062540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1512120.793651%
B1512473.108466%
C1512181.190476%
D151223215.343915%

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 1512 1512 0 0 0.00% 0.00%
B 1512 1512 29 29 1.92% 1.92%
C 1512 1512 3 3 0.20% 0.20%
D 1512 1512 167 167 11.04% 11.04%

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 13 248 13402 308.51 204 201 42.8
A 8 192 5585 125.83 204 201 42.8
A 13 254 2739 59.31 204 201 42.8
B 5 172 140803 3510.64 200 195 40.1
B 0 230 44839 1114.65 200 195 40.1
B 12 111 4367 104.16 200 195 40.1
C 14 238 30676 661.92 190 191 46.1
C 15 208 9779 208.18 190 191 46.1
C 3 233 7374 155.96 190 191 46.1
D 1 52 861499 18566.71 187 182 46.4
D 2 250 127193 2737.87 187 182 46.4
D 12 2 33333 714.61 187 182 46.4

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