ASTROSAT CZTI

Data Quality Report

Orbit 23308

Creation date: 2024-06-27T18:52:38.080818
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/AS1A07_148T02_9000003444_23308cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23308cztM0_level2_quad_clean.evt
Size (bytes)523,261,44088,176,960
Size499.0 MB 84.1 MB
Events in quadrant A3,642,590545,592
Events in quadrant B3,720,577550,912
Events in quadrant C3,730,790532,439
Events in quadrant D4,249,123524,900

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155763
B0156972
C0157322
D0175282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74211281.724835%
B74221632.196174%
C74221892.546483%
D74221752.357855%

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 8591 7422 0 0 0.00% 0.00%
B 8592 7423 0 0 0.00% 0.00%
C 8592 7424 0 0 0.00% 0.00%
D 8592 7424 63 63 0.73% 0.85%

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 12702 61.77 940 918 190.8
A 6 16 10972 52.7 940 918 190.8
A 3 137 8329 38.85 940 918 190.8
B 0 230 29835 160.58 933 910 180.1
B 12 111 21745 115.67 933 910 180.1
B 11 111 19142 101.22 933 910 180.1
C 14 238 141643 664.81 900 906 211.7
C 7 247 36213 166.78 900 906 211.7
C 10 9 28530 130.49 900 906 211.7
D 7 238 366080 1640.83 911 885 222.6
D 1 52 242004 1083.35 911 885 222.6
D 1 239 83390 370.7 911 885 222.6

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