ASTROSAT CZTI

Data Quality Report

Orbit 25783

Creation date: 2024-06-27T19:21:24.854668
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_147T01_9000003754_25783cztM0_level2.evt modeM0/AS1A09_147T01_9000003754_25783cztM0_level2_quad_clean.evt
Size (bytes)551,018,880105,563,520
Size525.5 MB 100.7 MB
Events in quadrant A3,453,206686,569
Events in quadrant B3,503,002703,621
Events in quadrant C3,554,704671,520
Events in quadrant D5,688,333633,696

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148940
B0149380
C0149450
D0219540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7201520.722122%
B7200921.277778%
C72001462.027778%
D72005057.013889%

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 7706 7202 0 0 0.00% 0.00%
B 7705 7201 2 2 0.03% 0.03%
C 7705 7200 0 0 0.00% 0.00%
D 7705 7201 419 419 5.44% 5.82%

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 10618 54.42 891 870 179.1
A 6 16 8525 42.74 891 870 179.1
A 3 137 8201 40.93 891 870 179.1
B 12 111 20886 118.69 889 864 168.7
B 11 111 19026 107.66 889 864 168.7
B 14 111 16804 94.49 889 864 168.7
C 14 238 137071 671.47 865 870 202.8
C 3 233 47749 231.11 865 870 202.8
C 13 61 5752 24.07 865 870 202.8
D 7 80 1194328 5923.26 847 826 201.5
D 1 52 921053 4567.02 847 826 201.5
D 13 104 254739 1260.15 847 826 201.5

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