ASTROSAT CZTI

Data Quality Report

Orbit 11303

Creation date: 2024-06-27T16:11:00.585112
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_144T01_9000001652_11303cztM0_level2.evt modeM0/AS1A04_144T01_9000001652_11303cztM0_level2_quad_clean.evt
Size (bytes)690,318,720100,897,920
Size658.3 MB 96.2 MB
Events in quadrant A4,839,686672,646
Events in quadrant B4,710,718696,434
Events in quadrant C3,246,780699,599
Events in quadrant D7,673,354536,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187593
B0183442
C0138862
D0271802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64444687.262570%
B64445919.171322%
C6444791.225947%
D6444153923.882682%

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 8970 6446 281 281 3.13% 4.36%
B 8970 6446 296 296 3.30% 4.59%
C 8970 6446 0 0 0.00% 0.00%
D 8970 6446 1298 1298 14.47% 20.14%

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 8 5 1383449 8426.9 812 797 164.1
A 0 8 249325 1514.71 812 797 164.1
A 8 6 21768 127.81 812 797 164.1
B 4 239 1392272 8949.5 816 799 155.5
B 0 219 32348 202.91 816 799 155.5
B 3 189 26419 164.78 816 799 155.5
C 14 234 6528 29.7 831 838 191.6
C 13 61 5980 26.84 831 838 191.6
C 5 128 2438 8.35 831 838 191.6
D 10 253 3165631 18145.11 722 701 174.4
D 7 80 856071 4903.99 722 701 174.4
D 8 195 429043 2455.76 722 701 174.4

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