ASTROSAT CZTI

Data Quality Report

Orbit 21421

Creation date: 2024-06-27T18:27:37.616802
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_140T01_9000003160_21421cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21421cztM0_level2_quad_clean.evt
Size (bytes)194,313,60031,824,000
Size185.3 MB 30.3 MB
Events in quadrant A1,402,625203,191
Events in quadrant B1,346,847206,898
Events in quadrant C1,338,992196,705
Events in quadrant D1,639,150191,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0491
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590682
B0560878
C0560568
D06665203

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2284934.071804%
B2284924.028021%
C22861124.899388%
D2284984.290718%

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 3543 2290 0 0 0.00% 0.00%
B 3544 2290 1 1 0.03% 0.04%
C 3540 2289 0 0 0.00% 0.00%
D 3542 2289 33 33 0.93% 1.44%

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 5 168 39367 562.19 345 340 69.4
A 11 47 33362 475.69 345 340 69.4
A 0 226 2974 37.94 345 340 69.4
B 12 111 7462 106.81 342 334 66.7
B 3 64 6572 93.47 342 334 66.7
B 11 111 6548 93.11 342 334 66.7
C 14 238 52044 669.63 329 332 77.2
C 3 233 4692 56.46 329 332 77.2
C 13 61 2215 24.38 329 332 77.2
D 1 20 151163 1825.24 335 325 82.6
D 1 52 78302 943.57 335 325 82.6
D 13 172 46333 556.73 335 325 82.6

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