ASTROSAT CZTI

Data Quality Report

Orbit 23768

Creation date: 2024-06-27T18:58:31.274613
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/AS1C05_002T06_9000003522_23768cztM0_level2.evt modeM0/AS1C05_002T06_9000003522_23768cztM0_level2_quad_clean.evt
Size (bytes)381,142,08080,421,120
Size363.5 MB 76.7 MB
Events in quadrant A2,127,374537,226
Events in quadrant B2,207,413562,501
Events in quadrant C2,226,191541,784
Events in quadrant D4,684,932486,569

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091151
B093791
C093721
D0172211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A436350.114600%
B4363150.343800%
C4363320.733440%
D436359813.706165%

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 4363 4363 0 0 0.00% 0.00%
B 4363 4363 1 1 0.02% 0.02%
C 4363 4363 1 1 0.02% 0.02%
D 4363 4363 679 679 15.56% 15.56%

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 8 255 9558 82.28 549 542 109.6
A 13 254 6132 51.01 549 542 109.6
A 0 226 4711 38.05 549 542 109.6
B 0 189 16977 159.37 555 544 103.1
B 12 111 12050 111.59 555 544 103.1
B 11 111 10835 99.8 555 544 103.1
C 14 238 87200 692.84 540 545 125.1
C 7 247 13717 105.31 540 545 125.1
C 1 16 12293 93.93 540 545 125.1
D 13 174 1889963 14937.45 521 507 126.5
D 1 52 333729 2634.35 521 507 126.5
D 8 195 287233 2266.77 521 507 126.5

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