ASTROSAT CZTI

Data Quality Report

Orbit 15721

Creation date: 2024-06-27T17:12:34.681077
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_198T01_9000002322_15721cztM0_level2.evt modeM0/AS1A04_198T01_9000002322_15721cztM0_level2_quad_clean.evt
Size (bytes)410,561,28084,856,320
Size391.5 MB 80.9 MB
Events in quadrant A2,843,543537,361
Events in quadrant B2,974,136551,183
Events in quadrant C3,311,920533,497
Events in quadrant D2,896,488529,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123692
B0126751
C0140321
D0126671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5994681.134468%
B5994981.634968%
C59941332.218886%
D5994721.201201%

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 7020 5996 0 0 0.00% 0.00%
B 7020 5996 6 6 0.09% 0.10%
C 7020 5996 0 0 0.00% 0.00%
D 7020 5996 2 2 0.03% 0.03%

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 13 248 41769 279.43 725 708 146.9
A 15 157 10832 68.9 725 708 146.9
A 0 226 6572 39.91 725 708 146.9
B 0 228 30865 221.71 720 701 136.1
B 4 173 28424 203.77 720 701 136.1
B 5 236 28307 202.91 720 701 136.1
C 3 233 414848 2504.67 708 713 165.3
C 14 238 116938 702.92 708 713 165.3
C 10 187 8002 44.08 708 713 165.3
D 12 110 80663 440.17 717 698 181.7
D 1 52 58262 316.86 717 698 181.7
D 2 234 21340 113.62 717 698 181.7

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