ASTROSAT CZTI

Data Quality Report

Orbit 09242

Creation date: 2024-06-27T15:43:18.595224
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/AS1G07_003T01_9000001290_09242cztM0_level2.evt modeM0/AS1G07_003T01_9000001290_09242cztM0_level2_quad_clean.evt
Size (bytes)226,261,44029,295,360
Size215.8 MB 27.9 MB
Events in quadrant A1,837,984166,521
Events in quadrant B1,729,216165,466
Events in quadrant C1,498,091169,890
Events in quadrant D1,574,898164,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08191804
B07898933
C06957532
D07311608

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0706
B0704
C0704
D0708

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30621023.331156%
B30581254.087639%
C3119511.635139%
D3099782.516941%

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 3856 3262 2 2 0.05% 0.06%
B 3856 3254 40 40 1.04% 1.23%
C 3856 3302 1 1 0.03% 0.03%
D 3856 3293 18 18 0.47% 0.55%

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 233280 2891.48 383 375 80.5
A 1 162 50590 623.41 383 375 80.5
A 1 178 18322 222.81 383 375 80.5
B 6 51 118524 1566.34 383 371 75.4
B 4 48 56293 741.35 383 371 75.4
B 0 214 22248 290.02 383 371 75.4
C 13 61 2937 28.32 382 382 90.2
C 12 4 2748 26.22 382 382 90.2
C 8 222 2410 22.48 382 382 90.2
D 7 71 63814 632.31 376 365 100.3
D 12 233 29144 286.8 376 365 100.3
D 2 14 20487 200.53 376 365 100.3

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