ASTROSAT CZTI

Data Quality Report

Orbit 17540

Creation date: 2024-06-27T17:37:45.381186
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_066T01_9000002600_17540cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17540cztM0_level2_quad_clean.evt
Size (bytes)1,445,460,480294,606,720
Size1.3 GB 281.0 MB
Events in quadrant A10,519,8861,876,033
Events in quadrant B10,960,4521,906,258
Events in quadrant C10,320,8451,835,226
Events in quadrant D10,496,1091,800,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04440
B04440
C04440
D04440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0464624
B0472214
C0450514
D0473205

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218711880.859586%
B218712421.106488%
C218711780.813863%
D218701430.653864%

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 25527 21875 76 76 0.30% 0.35%
B 25527 21875 92 92 0.36% 0.42%
C 25527 21875 0 0 0.00% 0.00%
D 25526 21874 47 47 0.18% 0.21%

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 14 237 594587 1155.01 2560 2509 512.6
A 15 174 93005 176.54 2560 2509 512.6
A 0 226 22371 38.75 2560 2509 512.6
B 10 245 783512 1628.6 2555 2497 479.6
B 15 222 121098 247.31 2555 2497 479.6
B 12 111 58785 117.37 2555 2497 479.6
C 14 238 383319 669.32 2455 2467 569.0
C 3 233 348270 607.73 2455 2467 569.0
C 13 61 17561 26.53 2455 2467 569.0
D 13 189 476983 791.73 2478 2405 599.4
D 5 222 430918 714.88 2478 2405 599.4
D 2 234 85622 138.83 2478 2405 599.4

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