ASTROSAT CZTI

Data Quality Report

Orbit 15797

Creation date: 2024-06-27T17:13:40.364749
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/AS1T02_058T01_9000002338_15797cztM0_level2.evt modeM0/AS1T02_058T01_9000002338_15797cztM0_level2_quad_clean.evt
Size (bytes)180,270,72046,376,640
Size171.9 MB 44.2 MB
Events in quadrant A1,270,268307,369
Events in quadrant B1,320,964312,814
Events in quadrant C1,468,040300,082
Events in quadrant D1,219,473295,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054313
B055062
C059802
D054342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2618833.170359%
B2618732.788388%
C2618933.552330%
D2618642.444614%

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 2979 2621 0 0 0.00% 0.00%
B 2979 2621 0 0 0.00% 0.00%
C 2979 2621 0 0 0.00% 0.00%
D 2979 2621 1 1 0.03% 0.04%

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 0 226 2914 36.99 329 323 70.0
A 12 194 2435 30.15 329 323 70.0
A 3 137 2301 28.24 329 323 70.0
B 0 189 11125 163.07 329 321 66.3
B 4 173 10386 151.92 329 321 66.3
B 12 111 7599 109.85 329 321 66.3
C 7 247 189666 2506.25 314 317 75.6
C 14 238 48254 634.5 314 317 75.6
C 13 61 2197 24.88 314 317 75.6
D 2 234 10257 114.96 318 310 86.5
D 2 120 7541 83.57 318 310 86.5
D 12 221 3551 37.46 318 310 86.5

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