ASTROSAT CZTI

Data Quality Report

Orbit 21485

Creation date: 2024-06-27T18:28:28.840650
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/AS1T03_141T01_9000003174_21485cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21485cztM0_level2_quad_clean.evt
Size (bytes)533,206,080110,413,440
Size508.5 MB 105.3 MB
Events in quadrant A3,612,060711,667
Events in quadrant B3,786,956724,499
Events in quadrant C3,664,626702,784
Events in quadrant D4,569,741677,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157320
B0161220
C0158870
D0186570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462
B01460
C01462
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7583640.843993%
B75821181.556318%
C75821121.477183%
D75821171.543128%

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 7813 7584 0 0 0.00% 0.00%
B 7812 7583 0 0 0.00% 0.00%
C 7812 7582 0 0 0.00% 0.00%
D 7812 7583 134 134 1.72% 1.77%

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 12297 60.16 935 913 189.2
A 3 137 7907 36.96 935 913 189.2
A 0 226 7907 36.96 935 913 189.2
B 0 190 41701 227.2 931 906 179.6
B 0 229 37756 205.22 931 906 179.6
B 0 230 35618 193.32 931 906 179.6
C 14 238 140674 669.93 890 894 208.6
C 0 239 49535 233.13 890 894 208.6
C 13 61 6317 25.99 890 894 208.6
D 5 32 455740 2078.5 903 876 218.8
D 7 38 338661 1543.51 903 876 218.8
D 1 52 109888 498.13 903 876 218.8

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