ASTROSAT CZTI

Data Quality Report

Orbit 24145

Creation date: 2024-06-27T19:02:38.322283
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/AS1A07_069T01_9000003570_24145cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24145cztM0_level2_quad_clean.evt
Size (bytes)229,080,96027,000,000
Size218.5 MB 25.7 MB
Events in quadrant A1,523,762159,863
Events in quadrant B1,547,072165,412
Events in quadrant C1,617,474150,222
Events in quadrant D2,060,990144,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060641
B062141
C064281
D079381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2747190.691664%
B2747230.837277%
C2747441.601747%
D2747822.985075%

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 2747 2747 0 0 0.00% 0.00%
B 2747 2747 0 0 0.00% 0.00%
C 2747 2747 13 13 0.47% 0.47%
D 2747 2747 70 70 2.55% 2.55%

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 0 23 5199 60.7 394 389 79.2
A 13 254 4447 51.21 394 389 79.2
A 0 226 3643 41.06 394 389 79.2
B 12 111 8539 109.85 392 384 74.2
B 11 111 7483 95.63 392 384 74.2
B 14 111 7001 89.14 392 384 74.2
C 14 238 60487 705.74 366 369 85.2
C 2 16 53489 623.59 366 369 85.2
C 7 247 47319 551.16 366 369 85.2
D 7 238 640750 7160.3 367 358 89.4
D 8 195 27183 299.93 367 358 89.4
D 1 52 10478 113.15 367 358 89.4

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