ASTROSAT CZTI

Data Quality Report

Orbit 29306

Creation date: 2024-06-27T20:02:36.167438
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/AS1A10_050T01_9000004212_29306cztM0_level2.evt modeM0/AS1A10_050T01_9000004212_29306cztM0_level2_quad_clean.evt
Size (bytes)1,228,916,160168,416,640
Size1.1 GB 160.6 MB
Events in quadrant A6,466,7741,109,299
Events in quadrant B9,267,6831,069,431
Events in quadrant C9,909,9291,045,318
Events in quadrant D10,742,3271,023,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272412
B0358602
C0381622
D0403572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A123311641.329981%
B1233210928.855011%
C12332159612.941940%
D1233210718.684723%

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 13931 12333 92 92 0.66% 0.75%
B 13932 12334 624 624 4.48% 5.06%
C 13932 12333 46 46 0.33% 0.37%
D 13932 12334 786 786 5.64% 6.37%

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 13 623411 2066.69 1493 1461 300.9
A 15 174 55183 178.51 1493 1461 300.9
A 13 254 24785 77.5 1493 1461 300.9
B 5 255 3005857 11080.84 1437 1400 271.1
B 10 245 554733 2040.77 1437 1400 271.1
B 12 111 33325 117.74 1437 1400 271.1
C 3 233 3791510 11904.19 1351 1361 318.4
C 14 238 447350 1400.77 1351 1361 318.4
C 14 254 350485 1096.54 1351 1361 318.4
D 1 52 3263566 9509.69 1416 1378 343.0
D 2 250 546583 1589.34 1416 1378 343.0
D 8 195 454164 1319.93 1416 1378 343.0

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