ASTROSAT CZTI

Data Quality Report

Orbit 27036

Creation date: 2024-06-27T19:35:45.734574
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/AS1A09_120T02_9000003904_27036cztM0_level2.evt modeM0/AS1A09_120T02_9000003904_27036cztM0_level2_quad_clean.evt
Size (bytes)2,528,251,200342,429,120
Size2.4 GB 326.6 MB
Events in quadrant A27,814,8361,879,886
Events in quadrant B14,115,6872,292,420
Events in quadrant C13,805,0072,190,153
Events in quadrant D18,979,8702,114,889

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01005810
B0583420
C0575020
D0744240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27515580421.093949%
B275163381.228376%
C275164391.595435%
D2751611264.092165%

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 31555 27515 4540 4540 14.39% 16.50%
B 31556 27516 10 10 0.03% 0.04%
C 31556 27516 0 0 0.00% 0.00%
D 31556 27516 883 883 2.80% 3.21%

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 14 235 14929249 23535.1 3169 3117 634.2
A 0 13 339942 531.1 3169 3117 634.2
A 6 16 260370 405.63 3169 3117 634.2
B 0 189 133578 194.52 3501 3413 669.2
B 10 245 108281 156.72 3501 3413 669.2
B 0 219 99442 143.51 3501 3413 669.2
C 14 238 543557 679.1 3394 3424 795.4
C 15 208 43684 50.62 3394 3424 795.4
C 13 61 23248 24.92 3394 3424 795.4
D 1 52 3946478 4937.64 3378 3297 798.6
D 5 222 1100300 1373.66 3378 3297 798.6
D 2 250 595037 740.97 3378 3297 798.6

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