ASTROSAT CZTI

Data Quality Report

Orbit 20181003_A05_034T01_9000002404_level2

Creation date: 2025-11-25T00:25:50.129492
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/AS1A05_034T01_9000002404cztM0_level2.fits modeM0/AS1A05_034T01_9000002404cztM0_level2_quad_clean.evt
Size (bytes)749,888,640704,211,840
Size715.1 MB 671.6 MB
Events in quadrant A4,591,0584,087,188
Events in quadrant B4,418,3004,199,322
Events in quadrant C4,565,2184,118,248
Events in quadrant D4,011,8143,797,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01644230
B01632890
C01563470
D01602140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01290
B01290
C01290
D01290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7473217492.340363%
B7473213301.779693%
C7473213271.775678%
D7473210201.364877%

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 91398 74732 0 0 0.00% 0.00%
B 91398 74732 0 0 0.00% 0.00%
C 91398 74732 0 0 0.00% 0.00%
D 91398 74727 0 0 0.00% 0.00%

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 0 29 4311 10.96 1193 1120 291.2
A 7 110 3518 8.23 1193 1120 291.2
A 15 236 3341 7.63 1193 1120 291.2
B 2 9 3711 11.43 1170 1120 226.7
B 2 8 3017 8.37 1170 1120 226.7
B 3 17 2944 8.04 1170 1120 226.7
C 1 81 3417 7.41 1205 1130 308.8
C 1 80 3364 7.23 1205 1130 308.8
C 12 241 3138 6.5 1205 1130 308.8
D 6 67 2802 5.84 1144 1043 301.1
D 10 189 2800 5.83 1144 1043 301.1
D 3 14 2784 5.78 1144 1043 301.1

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