ASTROSAT CZTI

Data Quality Report

Orbit 07964

Creation date: 2024-06-27T15:26:07.479174
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/AS1G06_077T01_9000001090_07964cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07964cztM0_level2_quad_clean.evt
Size (bytes)582,232,320111,516,480
Size555.3 MB 106.4 MB
Events in quadrant A5,187,013649,996
Events in quadrant B3,944,183728,724
Events in quadrant C3,820,420729,295
Events in quadrant D4,123,482698,243

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01722
B01720
C01722
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021180181
B017399145
C017177149
D018305181

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A820885210.380117%
B82062713.302462%
C82041852.254998%
D82012673.255701%

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 9291 8268 571 571 6.15% 6.91%
B 9291 8275 0 0 0.00% 0.00%
C 9291 8274 0 0 0.00% 0.00%
D 9291 8276 42 42 0.45% 0.51%

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 0 254 1566368 8149.7 933 909 192.1
A 15 239 12256 59.07 933 909 192.1
A 13 251 10915 52.09 933 909 192.1
B 4 81 80941 413.81 989 962 193.3
B 12 111 21779 107.71 989 962 193.3
B 11 51 17850 87.38 989 962 193.3
C 1 16 28174 119.88 967 970 226.9
C 9 68 9812 38.96 967 970 226.9
C 13 61 7242 27.64 967 970 226.9
D 1 52 231341 923.19 953 927 249.6
D 5 233 117434 466.8 953 927 249.6
D 2 14 64759 255.75 953 927 249.6

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