ASTROSAT CZTI

Data Quality Report

Orbit 15910

Creation date: 2024-06-27T17:15:02.206922
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/AS1A04_143T01_9000002344_15910cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15910cztM0_level2_quad_clean.evt
Size (bytes)495,423,360100,563,840
Size472.5 MB 95.9 MB
Events in quadrant A3,875,397635,587
Events in quadrant B3,705,328660,599
Events in quadrant C3,543,934624,355
Events in quadrant D3,381,024614,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162753
B0158562
C0151792
D0152352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73311021.391352%
B7331981.336789%
C73311071.459555%
D7331400.545628%

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 8067 7333 39 39 0.48% 0.53%
B 8067 7333 6 6 0.07% 0.08%
C 8067 7333 0 0 0.00% 0.00%
D 8067 7333 4 4 0.05% 0.05%

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 441958 2449.82 889 870 180.0
A 9 143 17336 91.45 889 870 180.0
A 0 226 7867 38.86 889 870 180.0
B 4 173 84677 482.94 897 874 173.5
B 0 229 66218 376.56 897 874 173.5
B 12 111 20244 111.62 897 874 173.5
C 14 238 133919 653.66 862 868 203.5
C 3 233 45518 219.36 862 868 203.5
C 13 61 6028 25.35 862 868 203.5
D 12 17 37186 169.47 870 845 214.4
D 2 234 36076 164.29 870 845 214.4
D 1 52 20241 90.45 870 845 214.4

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