ASTROSAT CZTI

Data Quality Report

Orbit 04521

Creation date: 2024-06-27T14:43:16.705789
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/AS1G05_250T01_9000000568_04521cztM0_level2.evt modeM0/AS1G05_250T01_9000000568_04521cztM0_level2_quad_clean.evt
Size (bytes)555,733,44090,241,920
Size530.0 MB 86.1 MB
Events in quadrant A4,772,474559,718
Events in quadrant B4,079,051563,447
Events in quadrant C3,336,929559,181
Events in quadrant D4,149,078544,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191153
B0171042
C0152562
D0172842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72575677.813146%
B72573965.456800%
C72571622.232327%
D72572803.858344%

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 7382 7260 207 207 2.80% 2.85%
B 7382 7260 243 243 3.29% 3.35%
C 7382 7260 10 10 0.14% 0.14%
D 7382 7260 94 94 1.27% 1.29%

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 13 1505781 9013.47 817 798 167.0
A 8 15 55706 328.85 817 798 167.0
A 15 234 28205 164.14 817 798 167.0
B 0 228 641203 4025.34 832 812 159.1
B 15 204 77525 482.2 832 812 159.1
B 4 48 46427 286.72 832 812 159.1
C 9 247 139648 731.29 812 813 189.9
C 1 16 7645 35.99 812 813 189.9
C 14 48 6779 31.42 812 813 189.9
D 13 235 302965 1535.3 806 780 196.8
D 2 14 201292 1018.74 806 780 196.8
D 8 195 128890 650.88 806 780 196.8

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