ASTROSAT CZTI

Data Quality Report

Orbit 25285

Creation date: 2024-06-27T19:15:55.681378
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_022T01_9000003702_25285cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25285cztM0_level2_quad_clean.evt
Size (bytes)139,838,40017,303,040
Size133.4 MB 16.5 MB
Events in quadrant A964,760104,950
Events in quadrant B1,233,705106,972
Events in quadrant C934,38796,971
Events in quadrant D991,24196,639

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039640
B047110
C038110
D040530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159740.250470%
B15961559.711779%
C1596271.691729%
D159630.187970%

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 1597 1597 0 0 0.00% 0.00%
B 1596 1596 75 75 4.70% 4.70%
C 1596 1596 0 0 0.00% 0.00%
D 1596 1596 0 0 0.00% 0.00%

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 13 254 2701 48.65 249 245 50.5
A 13 170 2652 47.68 249 245 50.5
A 0 226 2251 39.74 249 245 50.5
B 3 64 335661 7688.05 228 224 43.6
B 0 190 7319 162.61 228 224 43.6
B 12 111 4826 105.48 228 224 43.6
C 14 238 38644 733.4 226 228 52.4
C 0 207 8891 165.39 226 228 52.4
C 0 239 4048 72.93 226 228 52.4
D 8 195 51915 892.61 235 228 57.9
D 1 52 25570 437.64 235 228 57.9
D 12 235 16319 277.88 235 228 57.9

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