ASTROSAT CZTI

Data Quality Report

Orbit 20220329_A11_069T01_9000005034_level2

Creation date: 2022-04-01T12:37:32.673476
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/AS1A11_069T01_9000005034cztM0_level2_bc.evt modeM0/AS1A11_069T01_9000005034cztM0_level2_quad_clean.evt
Size (bytes)1,252,509,120189,751,680
Size1.2 GB 181.0 MB
Events in quadrant A7,107,7501,163,050
Events in quadrant B11,924,917985,527
Events in quadrant C5,728,2241,176,457
Events in quadrant D11,861,5251,097,218

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543320
B0814010
C0436610
D0659280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1918813457.009589%
B19188551228.726287%
C191883421.782364%
D1918811576.029810%

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 25130 19192 5 5 0.02% 0.03%
B 25130 19186 143 143 0.57% 0.75%
C 25130 19189 81 81 0.32% 0.42%
D 25130 19187 197 197 0.78% 1.03%

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 15 169 3081476 14525.05 951 934 212.1
A 10 83 208928 980.71 951 934 212.1
A 9 143 79580 370.82 951 934 212.1
B 5 236 8085411 48229.21 842 824 167.6
B 5 172 450900 2684.96 842 824 167.6
B 4 232 76906 453.87 842 824 167.6
C 15 214 752250 3443.04 952 943 218.2
C 0 207 624399 2857.14 952 943 218.2
C 0 10 500137 2287.68 952 943 218.2
D 8 195 4926471 21573.52 946 915 228.3
D 13 249 606083 2650.59 946 915 228.3
D 5 223 573511 2507.92 946 915 228.3

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