ASTROSAT CZTI

Data Quality Report

Orbit 28156

Creation date: 2024-06-27T19:48:40.032136
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_045T04_9000004066_28156cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28156cztM0_level2_quad_clean.evt
Size (bytes)498,369,60091,117,440
Size475.3 MB 86.9 MB
Events in quadrant A3,162,740588,397
Events in quadrant B3,263,538603,247
Events in quadrant C3,342,080572,959
Events in quadrant D4,880,386537,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133680
B0136190
C0137520
D0190100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544460.702934%
B6545661.008403%
C6545711.084798%
D65452984.553094%

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 7484 6544 0 0 0.00% 0.00%
B 7485 6546 12 12 0.16% 0.18%
C 7485 6546 3 3 0.04% 0.05%
D 7485 6546 233 233 3.11% 3.56%

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 13 254 9867 54.93 819 804 165.0
A 3 137 7556 40.93 819 804 165.0
A 0 226 7098 38.15 819 804 165.0
B 10 245 63971 406.56 808 789 155.4
B 12 111 19049 117.5 808 789 155.4
B 11 111 17328 106.42 808 789 155.4
C 14 238 127331 689.23 785 790 183.6
C 3 233 98918 534.47 785 790 183.6
C 2 16 55048 295.53 785 790 183.6
D 7 223 536065 2874.58 778 760 186.2
D 8 195 434680 2330.14 778 760 186.2
D 1 52 387845 2078.64 778 760 186.2

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