ASTROSAT CZTI

Data Quality Report

Orbit 07896

Creation date: 2024-06-27T15:25:23.507590
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/AS1A02_158T01_9000001080_07896cztM0_level2.evt modeM0/AS1A02_158T01_9000001080_07896cztM0_level2_quad_clean.evt
Size (bytes)699,091,200132,995,520
Size666.7 MB 126.8 MB
Events in quadrant A5,057,452815,374
Events in quadrant B5,354,784828,341
Events in quadrant C5,001,324826,428
Events in quadrant D5,004,376788,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228683
B0234052
C0228172
D0231042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111232031.825047%
B111232292.058797%
C111231321.186730%
D111231441.294615%

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 12038 11125 0 0 0.00% 0.00%
B 12038 11125 17 17 0.14% 0.15%
C 12038 11125 0 0 0.00% 0.00%
D 12038 11125 7 7 0.06% 0.06%

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 15 239 27473 98.57 1296 1266 265.9
A 8 15 15446 53.33 1296 1266 265.9
A 0 226 11975 40.28 1296 1266 265.9
B 4 239 104929 410.56 1309 1277 252.5
B 4 81 69242 269.21 1309 1277 252.5
B 0 213 40780 156.47 1309 1277 252.5
C 14 67 12733 38.29 1277 1282 299.1
C 13 61 9612 27.85 1277 1282 299.1
C 1 16 5777 15.03 1277 1282 299.1
D 13 104 50932 157.87 1271 1232 314.8
D 2 234 43503 134.27 1271 1232 314.8
D 4 95 43167 133.2 1271 1232 314.8

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